Answered by Shaykh Faraz Rabbani
If my baby wakes up while I’m having sex, is it then allowed to nurse her back to sleep without performing wudu or ghusl?
Walaikum assalam wa rahmatullah,
I pray that this finds you well, and in the best of health and spirits. May Allah grant you all good and success in this life and the next.
Yes, it is permitted without dislike to nurse a child when in a state of major ritual impurity (janaba), such that one requires ghusl.
And Allah alone gives success.