i have one question. I am my wife had sex at night after sex without having gusul can we drink water or eat some thing. also can my wife prepare food and serve to others without...

In the name of Allāh, Most Gracious, Most Merciful

Assalāmu ῾alaykum wa Rahmatullāhi Wabarakātuh

It is permissible to eat after having sexual intercourse (for males and females) without making Ghusl on condition that the hands and mouth is washed, otherwise it will be Makrūh.

There is also no harm for ones wife to cook or serve the food in the states of janābah (i.e. without having made ghusl); in this case she will be as a Hāidha (one having monthly menses).

ويكره للجنب رجلا كان أو امرأة أن يأكل طعاما أو يشرب قبل غسل اليدين والفم ولا يكره ذلك للحائض والمستحب تطهير الفم في جميع المواضع كذا في فتاوى

(Hindiya, pg337 vol.5 Maktaba Rashidiya)

And Allāh Ta῾āla Knows Best

Wassalāmu ῾alaykum 

Ml. Zakariyya bin Ahmed,
Student Dārul Iftā

Checked and Approved by:

Mufti Ebrahim Desai
Dārul Iftā