I would like to understand the hadith if a women withholds intimacy from her husband she will be cursed by the malaika?
My question is that if a husband requests intimacy from a wife, is it halal for her to request him to do it at a later time but if he can't hold it we can do it now (basically the intention isn't to deny as she'll do it if he needs it but rather to do it at a later time because of exhaustion for example)

If she is not denying him, and she is requesting for it to be postponed, and this does not put him in difficulty, then it’s ok.