Volume 4, Book 55, Number 545:
Narrated Abu Salama:
Um Salama said, “Um Salaim said, ‘O Allah’s Apostle! Allah does not refrain from saying the truth!
Is it obligatory for a woman to take a bath after she gets nocturnal discharge?’ He said, ‘Yes, if she
notices the water (i.e. discharge).’ Um Salama smiled and said, ‘Does a woman get discharge?’ Allah’s
Apostle said. ‘Then why does a child resemble (its mother)?”