What is the ruling of Sharia on the husband who has intercourse with his wife through her back passage, whether she agrees or not?
Answer:
All perfect praise be to Allah, the Lord of the Worlds; may His blessings and peace be upon our Prophet Mohammad and upon all his family and companions.
Having intercourse with wife from her back passage is haram. Rather, scholars have considered this a major sin and the righteous predecessors used to call it "Lesser Sodomy" (intercourse with a woman in her back passage).This is regardless of whether the wife agreed to this act or not.
There are many saheeh ahaadeeth (Authentic narrations) which show that anal intercourse is haraam, such as the following:
1 – It was narrated from Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allaah (peace and blessings of Allaah be upon him) said: “The one who has intercourse with his wife in her back passage has disavowed himself of that which was revealed to Muhammad (peace and blessings of Allaah be upon him).” Narrated by Abu Dawood (3904).
2 – It was narrated that Ibn ‘Abbaas (may Allaah be pleased with him) said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “Allaah will not look at a man who has intercourse with a woman in her back passage.” Narrated by al-Tirmidhi (1165); classed as saheeh by Ibn Daqeeq al-‘Eid in al-Ilmaam (2/660).
3 – It was narrated that Khuzaymah ibn Thaabit (may Allaah be pleased with him) said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “Allaah is not too shy to tell the truth” three times. “Do not have intercourse with women in their back passages.” Narrated by Ibn Maajah (1924).
And there are many similar ahaadeeth. Al-Tahhaawi (may Allaah have mercy on him) said in Sharh Ma’aani al-Athaar (3/43): The reports concerning that reach the level of tawaatur. End quote.
Hence the views of the scholars are based on these ahaadeeth.
Al-Maawardi (may Allaah have mercy on him) said in al-Haawi (9/319):
Because that is the consensus of the Sahaabah. It was narrated from ‘Ali ibn Abi Taalib, ‘Abd-Allaah ibn ‘Abbaas, Ibn Mas’ood and Abu’l-Darda’. End quote.
In conclusion, whoever committed this major sin must make sincere repentance, ask Allah for forgiveness and resolve not to recommit it. However, the wife isn`t considered divorced and no expiation is payable because it is, mostly, required in case of minor sins, not major ones. And Allah the Almighty knows best.