Women must be available for sex at all times

THE WIFE'S MARITAL OBLIGATIONS

m5.1 It is obligatory for a woman to let her husband have sex with her immediately when:

(a) he asks her;

(b) at home (O: home meaning the place in which he is currently staying, even if being lent to him or rented);

(c) and she can physically endure it.

(d) (O: Another condition that should be added is that her marriage payment (mahr, def: m8) has been received or deferred to a term not yet expired.

As for when sex with her is not possible, such that having it would entail manifest harm to her, then she is not obliged to comply.)

If she asks him to wait, she is awaited, to a maximum of three days (O: She does not ask to wait because of not having finished her period or postnatal bleeding, for there is not physical harm entailed in her complying as she is, though if she fears that such foreplay with him will lead to actual copulation (A: which is unlawful under such circumstances), then she may refuse, as that is not obligatory). (n: w45 discusses wives' other duties to husbands.)