Question Summary:
what happens if we drink the milk of our wife? nikah will be break-up because of it or not or whatelse?

Question Detail:

what happens if we drink the milk of our wife? nikah will be break-up because of it or not or whatelse?
and during the period of menses if somebody have done sexual activity in backside .then what happens? nikah will be break-up becuase of it or not or whatelse?

Answer :

In the name of Allah, Most Gracious, Most Merciful
Assalaamu `alaykum waRahmatullahi Wabarakatoh
1.      Precaution should be taken that the milk of the wife does not enter the mouth. However, if the milk does enter the mouth this will not affect the nikah.
 
بدائع الصنائع - (ج 3 / ص 400)إحياء التراث
 فصل وأما صفة الرضاع المحرم  فالرضاع المحرم ما يكون في حال الصغر فأما ما يكون في حال الكبر فلا يحرم عند عامة العلماء وعامة الصحابة رضي الله عنهم إلا ما روي عن عائشة رضي الله عنها أنه يحرم في الصغر والكبر جميعا

2.         It is a major sin to have intercourse through the back. Nabi صلى الله عليه و سلم said:
 
حدثنا هناد عن وكيع عن سفيان عن سهيل بن أبى صالح عن الحارث بن مخلد عن أبى هريرة قال قال رسول الله -صلى الله عليه وسلم- « ملعون من أتى امرأته فى دبرها ». سنن أبى داود
Cursed is his who has intercourse with his wife through the back. (Abu Dawood)
However this will not break the nikah.
 
And Allah knows best
Wassalam
Ml. Ishaq E. Moosa,
Student Darul Iftaa
Checked and Approved by:
Mufti Ebrahim Desai
Darul Iftaa, Madrassah In'aamiyyah