Dancing is a natural behavior in many cultures; a way of showing happiness or sometimes sadness. In a theory raised by me! the release of energy by moving our body is dancing. But in a theory raised by a scholar "dance refers to a rhythmic movement of the body, usually for entertainment" [1]. Now, let us take both of these definitions into consideration and see what kind of dancing in Islam is forbidden (Haram).

The General Ruling of Dancing in Islam

In the view of some Islamic scholars, it is not permissible for women to dance anywhere in any ceremony irrespective of whether it is a wedding or a birthday ceremony except for a woman's dancing for her husband.

In expanding the above ruling, it has been said that “there is no problem in dancing in itself. However, if dancing entails sexual excitation or committing a forbidden (Haram) act like listening to forbidden (Haram) music, or it is in the presence of non-mahram men, it is forbidden (Haram). And it does not make a difference as to the various types of music. Generally speaking, if dancing is done in a sexually exciting manner, and lead to the commission of a forbidden act, or involves a bad effect, or if it is happening in front of a non-Mahram it is forbidden (Haram)” [3].

If a woman dances for her husband or vice-versa, and the dancing is not accompanied by a forbidden (Haram) act, there is no problem in it [4].

Dancing in Mixed Parties

In mixed parties where men and women are sitting together, the dance of men or women in front of others is forbidden. Some think that it is OK if men dance in front of women. But in fact, it is forbidden (Haram) for a man to dance. Dance of women in front of men and any dancing which may entail a bad effect and arousal of sexual desires are forbidden (Haram). Playing music and listening to it is also unlawful (Haram) if it is done in a lahwi, enrapturing manner.

No matter if men or women who are dancing together or in front of others are of their unmarriageable kin (maḥrams) of the opposite sex. What is forbidden about dancing is general, i.e., regardless of whether it is done by a man, a woman, or in the presence of one’s marriageable kin (non-maḥram) or unmarriageable kin (maḥram) [5].

Women Dancing for Women in Small Parties, Friendly Gatherings, and Weddings

Dance of women for women is permitted (Halal) if it is not done in a sexually exciting manner and does not lead to the commission of a forbidden act, nor entails a bad effect. However, it is forbidden (Haram) to attend a dance party if it is considered as accepting the forbidden (Haram) act of others or leads to committing a forbidden (Haram) act. Otherwise, there is no harm in it. Dance of a woman for other women is forbidden if her husband does not allow her to do so. 

Some people think that the rulings of dancing do not apply to wedding parties as it is just one happy night. But there is no difference between a  wedding party and other occasions. Dancing with music is forbidden (Haram) [6].

In the case of wedding parties, the dance of women in front of women is not forbidden (Haram) under the conditions mentioned above.

Men Dancing for Men in Separate Parties or Weddings

As mentioned before, by obligatory caution, it is forbidden (Haram) for men to dance.

Dancing for fitness/ Aerobics and other sports with music

Here we discuss the point of releasing energy by moving the body. Is it forbidden (Haram)?

If the movements of the body do not meet the criteria of forbidden (Haram) dance, and if it is not accompanied by forbidden (Haram) music, there is no problem in dancing in private or in groups of women for fitness. However, we have to make sure that such dancing is not happening in front of CCTV cameras or filmed by people who may show it to non-mahrams.

Aerobics and other sports that are based on rhythmic music are permissible if the music is not forbidden (Haram). If music does not cause ecstasy, there is no objection to it. The duty-bound (mukallaf) himself should distinguish whether the music is lahwi or not [7].

Dance Teaching Centers

Establishing centers for teaching and promoting dancing goes against the objectives of the Islamic system and it is impermissible by obligatory caution [8].

References:

1. Sayyid Mujtaba Husseini, Questions and Answers by Students (Rules regarding Music), pg. 84
2. Ayatullah Makarem-Shirazi, jurisprudential expressions, http://portal.anhar.ir/node/409#gsc.tab=0
3. Sayyid Mas'ud Ma'sumi, Rules regarding Man-Woman Relationships, pg. 219
4. Tawzih al-Masail (with annotations by Imam Khomeini), vol.2, pg. 970
5. Dancing
6. dance in Islam
7. Dance
8. Dance infront of non Mahrams

Following the discussions on the concept of responsibility in Islam and Muslims' duties towards other human beings, this article reviews the duties towards the teachers, students, and young and older adults.

The Responsibility in Islam Towards Mentors

Teachers are acknowledged and valorized in Islam. It is said that God, angels, earth inhabitants and even the small ants in their nests and the fish in the seas, all salute the mentors who invite to goodness [1]. Imam Ali (AS) said that whoever has taught me a word has made me “his slave”[i] [2]. Regarding the Islamic resources, the rights of the mentor over the students are:

to be polite and grateful to the mentor, and honor him\her [3];
to sit down politely in his\her presence such that to face him\her directly [3];
to listen carefully to him\her and forget anything else during the session except what the mentor explains [3];
not to answer the questions that the mentor has been asked about and let him\her to reply [3];
to lower your voice when talking to him\her [3] as a means of showing the respect for him\her;
to ask in order to know and not to annoy the mentor or to mock him\her [4] and then to listen carefully to the answer of the question [5];
not to talk and whisper to anybody in his\her presence [3] otherwise the mentor feels being ignored;
not to talk behind other people’s back with him\her [3] since this is an unpleasant act which also bothers the audience ;
not to let others insult the mentor or lie about him\her [3];
not to reveal his\her deficiencies and to tell others about his\her positive characteristics [3].

The Rights of the Knowledge-seeker and The Responsibility in Islam Towards Them[ii]

Seeking knowledge is such important in Islam that according to Prophet Muhammad (PBUH&HP), trees, winds, clouds, seas and stars, plants and everything that the sunshine falls on, all ask for mercy for whoever seeks knowledge [6]. Also, the Prophet (PBUH&HP) said that whoever seeks knowledge is beloved by God, angels, and prophets and good for them on the judgment day [7]. Of the rights of the knowledge-seekers over their mentor are:

To be kind to them [8];
To be humble and flexible to them [8];
To know their names and some details about each of them [8]. This helps to maintain a better relationship and consequently to better teach and educate them;
To respect their character and to consider their words and thoughts [8];
To equally love them and pay attention to them [8]. In this regard, mentors are almost like judges in Islam;
To teach with serenity and dignity [8], therefore, his\her lessons impress their mind and soul  ;
To be tolerant of them and answer their questions properly [8];
To consider and support kindly the newcomers [8];
To honestly tell if he\she does not know the answer to a question [8] instead of saying what he\she is not sure about;

The Rights of Young People

Of the rights of young people over older adults and their responsibility in Islam are: 

To be kind to them [3];
To be engaged in their education and training [3];
To ignore and forgive their mistakes and hide their deficiencies [3];
To tolerate them, be patient with them and help them in difficulties [3];
If the young people do something wrong because they are naive, the older adults should not reveal that [3];
To avoid arguments and conflicts with them [3].

The Rights of Elderly people

The responsibility in Islam of the younger people toward the elderly include:

To respect them since they are older than you [3];
If they argue with you, do not react unpleasantly [3];
If you accompany each other on the way, do not overtake them [3];
If they do not know about something, do not humiliate them [3];
And, if they ignore you because you do not know something, keep calm and do not react as they are older than you [3].

Notes: 
[i] The word “slave” here does not mean servant, but is used to valorize the mentor and emphasizes the importance of respecting him\her.
[ii] Knowledge-seeker is used as a more general word than a student to cover whoever seeks knowledge.

References:

1. M. B. Majlisi, “Bihar al-Anwar”, vol. 61, p. 245
2. M. Naraqi, “Jami' al-Sa'adat”.
3. Imam Zayn al-'Abidin (AS), “Treatise On Rights (Risalat al-Huquq)”.
4.  “Nahj al Balaqa”, I. 320.
5. Ibn Babawayh, “Ilal Al-Shara'I”, vol. 2. p. 334.
6. H. al-Daylami, "Irshad al-Qulub", p. 164.
7. M. Shoueiri “Jami’ al-Akhbar”, p. 37.
8.  Al-Shahid al-Thani, “Munya al-murid fi adab al-mufid wa al-mustafid”, p. 190-219.