Hadith.197 – Imam Jafar ibn Muhammad Al-Sadiq (as) narrates:
Salman al-Farsi (may Allah (swt) have mercy on him) asked Amir al-Mu'minin (as) about the sustenance of the child in its mother's womb.
Imam (as) said: 'Indeed, Allah (swt), Blessed and Exalted, has reserved the menstrual period for it and made it its sustenance in its mother's womb.'