Eid al Adha (or Dhuha) is one of the greatest eids of Islam. It is a feast of love, sacrifice, and submission to the will of Allah (s.w.t). Celebrated on the 10th of Dhul Hijjah, the last month of the Islamic calendar, it is the time of the year where Muslims from all over the world gather for the annual ritual of Hajj and mark the end of Hajj by sacrificing a camel, a cow or a sheep. Those Muslims who could not make it for Hajj, sacrifice these animals and distribute the meat and other gifts among the poor, their family and friends. 

There are many recommended (not obligatory) rituals and practices to be performed on the day of Eid al Adha, some of them are as follows: 

-Doing Ghusl (ritual bath)
-Eid Prayer, either in a congregation or individually
-Reciting the Ziarat of Imam Husain (AS), the third infallible Imam
-Sacrificing either a camel, cow, or sheep. Sacrifice is obligatory for those performing Hajj and recommended for those not performing Hajj
-According to Islamic laws, it is forbidden to fast on this day

History of Eid al Adha 

Prophet Abraham (PBUH) was a true embodiment of the verse from the Holy Quran: “Do the people suppose that they will be let off because they say, ‘We have faith,’ and they will not be tested? Certainly, We tested those who were before them. So, Allah shall surely ascertain those who are truthful, and He shall surely ascertain the liars.” (29:2)

Prophet Abraham (PBUH) was a great Prophet of Allah (SWT) who is greatly celebrated in the Holy Quran. He is one of the Ulu –l-Azm (Arch) prophets. Allah (SWT) calls him his friend in the Holy Quran (4:125). The intended sacrifice of this holy prophet is greatly eulogized in the Holy Quran and the prophetic traditions. Abraham is especially famous for the numerous ways God tested him; especially the tough tests of leaving his wife Hagar and his firstborn son Ishmael (2:124) and bringing his son to a special place as an offering to God (37:100-113).

The story of Prophet Abraham sacrificing his son is mentioned in the Holy Quran as follows: 

“My Lord! Give me [an heir], one of the righteous.” So We gave him the good news of a forbearing son. When he was old enough to assist in his endeavor, he said, ‘My son! I see in dreams that I am sacrificing you. See what you think.’ He said, ‘Father! Do whatever you have been commanded. If Allah wishes, you will find me to be patient.’ So, when they had both surrendered to Allah’s will, and he had laid him down on his forehead, We called out to him, ‘O Abraham! You have indeed fulfilled your mission! Thus, indeed do We reward the virtuous! This was indeed a manifest test.’ Then We ransomed him with a great sacrifice, and left for him a good name in posterity: ‘Peace be to Abraham!’ Thus, do We reward the virtuous? He is indeed one of Our faithful servants.” (37:100-110)

The Holy Quran gives us a very clear picture of the incidents that unfolded with Prophet Abraham (PBUH). It tells us that Prophet Abraham (PBUH) prayed for a righteous heir and Allah (SWT) answered his prayers. But after a few years, Allah (SWT) orders his Prophet to sacrifice his only son and both Prophet Abraham (PBUH) and Prophet Ishmael (PBUH) agree to submit to the will of Allah (SWT). It was a test for Prophet Abraham (PBUH) as well as his son Prophet Ishmael (PBUH), who emerged victorious from this test. Thus, leaving a legacy of complete submission to the will of Allah (SWT), a submission that calls for sacrificing everything you have to gain the pleasure of your beloved creator. It is this humble and pure submission of Prophet Abraham (PBUH) that makes this great prophet a ‘good example’ for us. (60:4). 

The sacrifice of Prophet Abraham is not a fairy tale to be read to our children before going to sleep, it is a story that has the potential to make human beings build a lasting relationship with Allah (SWT). If we truly trust in Allah (SWT) and reach a position where we readily sacrifice everything in the way of Allah, we can proudly claim to be inheritors of the legacy of Abraham, a friend of Allah (SWT). But for us to reach that position we need to first ask ourselves: who is our Ishmael? Is it my child, my spouse, my property, wealth, job, position or my desires? 

References

1. Quran Translations, Ali Quli Qara’i
2. Recommended rituals and practices on the eve of Eid and the day of Eid: Dua for EID ul Adha Night and Day (duas.org) (these recommended acts can also be found in Mafatih Al-Jinan under the section of aamaal for Eid)
3. Exegesis of Surah Saaffat, Tafseer Nemuneh, Ayatollah Makarem Shirazi (Farsi)

Coexistence means living together, cooperating socially and economically of either the people of two countries to fulfill their livelihood or two individuals who might not share the same interests. In other words, coexistence includes being together, not interfering in others’ private affairs, and respecting the rights of others. Islam, which considers both the individual and social needs of human beings, offers a complete package for a thriving social life. Through its teachings, the Prophet’s (PBUH & HP) and infallible Imams’(AS) tradition (Sunnah), and the Quranic teachings, Islam has provided some clear guidelines for Muslims and the followers of other religions peaceful coexistence in the Quran. Here, we focus mostly on what the Quran offers in this regard. 

1. Justice and Beneficence in Dealing with Others for A Peaceful Coexistence in the Quran

The first point raised about the peaceful coexistence in the Quran is that Muslims should deal with non-Muslims with justice and beneficence, as far as non-Muslims have not expressed any hostility against them and don’t respond to their kindness with hatred (60:8). In Surah Mumtahina, it is said that: “Allah forbids you only in regard to those who made war against you on account of religion and expelled you from your homes and supported [others] in your expulsion, that you make friends with them, and whoever makes friends with them—it is they who are the wrongdoers.”(60:9). 

Accordingly, non-Muslims are in two groups — the first group who are in peace with Muslims and live peacefully with them. The Islamic government and Muslims of society should respect this group and recognize their rights. The second group is those who act against Muslims, Islam, and the Islamic government. Undoubtedly, they should be counteracted, and there would be no place for peace in this case [1]. That’s why Imam Ali (AS) had devoted a share of public treasury (Bayt al-mal) to help the needy people of other religions. It means that an Islamic government does not overlook non-Muslims, but recognizes their rights and supports them. (10:57) 

2. Recognizing Freedom of Thought is an Underlying Factor in Muslims Peaceful Coexistence in the Quran

Humans naturally tend to reject any imposed idea or belief. And, the Quran never orders something which opposes to human’s nature. Hence, non-Muslims are not compelled to convert to Islam (2:256), and they are free to keep their religion. In Surah An’am, Prophet Muhammad (PBUH & HP) is told that: “Had Allah wished, they would not have ascribed partners [to Him]. We have not made you a caretaker for them, nor is it your duty to watch over them.” (6:107). Based on these verses, along with some others, Islam recognizes other Abrahamic religions, and no Muslim is permitted to force any non-Muslim to accept Islamic ideas. Still, Muslims should let non-Muslims to retain their own religious views and beliefs and to live peacefully in society.

3. Peaceful Religious Discussion with Others

If Muslims want to discuss their religious viewpoints with followers of other religions, they are told: “not to argue with the People of the Book, except in a manner which is best” (29:46). It means to exchange peacefully with logical reasoning and argument. Even in their discussions with polytheists, Muslims are prevented from insulting those whom they invoke besides Allah Almighty; otherwise, they would affront Allah Almighty out of hostility (6:108) [1]. It should be noted that the aim of these discussions should be clarifying the truth and not obliging others to convert. As stated above, no one is forced to accept what we believe. This manner ensures Muslims and non-Muslims peaceful coexistence in the Quran.  

4. Islam recognizes other religions

In surah Baqara, it is stated that Prophet Muhammad (PBUH & HP) and the faithful have faith in what has been sent down to him (PBUH & HP) from Allah Almighty, and they believe in Allah Almighty, His angels, His scriptures and His apostles, and they make no distinction between any of His apostles (2:285). It means that a real believer should recognize all previous Prophets sent by Allah Almighty and what they have brought to humans from Him [2]. Besides, in Ayat 62, the followers of other religions like the Jews, the Christians, and the Sabaeans who are faithful to Allah and the Day of Judgement and act righteously are told to have their reward from Allah Almighty (2:62). This is another proof that Islam recognizes other religions. Also, it reveals that there have been faithful people among the followers of other religions who truly believed in Allah almighty according to the teachings of their faith.

5. Islam Encourages Peace-Making

In dealing with the opponents of Islam, Islam orders Muslims to accept if they offer peace and declare a ceasefire and emphasizes that: “Allah does not allow you any course [of action] against them” (4:90). In other verses, Muslims are told that: “If they incline toward peace, then you [too] incline toward it” (8:61). 

6. Marriage and Friendship with non-Muslims

Another example that demonstrates Islamic teachings promote peaceful coexistence in the Quran with non-Muslims is that in the Quran, Muslims are told that: “the food of those who were given the Book is lawful to you, and your food is lawful to them” (5:5). Besides, according to the Quran, Muslim men can marry the chaste ones from among faithful women, and chaste women of those who were given the Book before Muslims, once their dowries are paid to them (5:5). These two instances show that Muslims are free to fraternize with non-Muslims and exchange with them in society.

What has been mentioned above are only some of the many Islamic guidelines that encourage treating others kindly and behaving friendly with the followers of other religions. That makes them incline slightly towards Islam, such that after a Christian boy who had converted to Islam changed his bad behavior with his mother, the mother was attracted and converted to Islam, too. This, together with many instances of the way that Prophet Muhammad (PBUH & HP) and Infallible Imams (AS) treated non-Muslims, proves Islam's deep care for the way Muslims deal with others which should ultimately lead them toward tolerance and maintaining a peaceful coexistence as stated in the Quran.  

References:

1.  M. A. Amini, “The principle of peaceful coexistence with non-Muslims in Islam,” Ma’rifat Journal, no. 165, p. 35-52.
2.  M. H. Tabataba’ei, “Translation of Tafsir Al-Mizan, “vol. 2, p. 681.