Skandapurana 5.191.99

5.191.99

miṣṭānnaṃ yacchate yaśca nārīṇāṃ ca viśeṣataḥ ..
tasyā dakṣiṇamūrtau ca bhartrāḍhyānāṃ dvijottamāḥ ..
sa ca sikthapramāṇāni yugā ni divi modate ..99..

And whoever gives sweet food, especially to women
who have their husbands, at her southern form, O best of brahmins,
he rejoices in heaven for as many yugas as there are grains of boiled rice.