Can a man and woman eat, drink and cook when they slept together and need a ghusl?
Answer:
In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
It is permissible to eat, drink and cook after having intimate relations prior to taking a ghusl (ritual bath). However, it will be better if somebody washes his mouth and hands prior to consuming anything.[i]
It will not be permissible for a person in janābah (ritual impurity) to[ii]:
1) Perform salāh
2) Recite an āyah of the Qur῾ān
3) Touch the Qur῾ān
4) Enter the masjid
5) Perfrom tawāf(circumambulation of the ka῾bah)
And Allah Ta’āla Knows Best
Mufti Faraz Ibn Adam al-Mahmudi,
www.darulfiqh.com