Hadith.5675 - Al-Hasan ibn Mahbub narrated from Ibn Mihzam, from Talhah ibn Zayd, who said that Abu Abdullah (as) said: "Child in the womb (hamil) will not inherit except with clear evidence." Imam (as) explained: "The hamil is the child carried by a pregnant woman who was captured while pregnant, and later the father or the brother recognizes the child as theirs."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.

Hadith.5676 - Safwan ibn Yahya narrated from Abdur Rahman ibn Al-Hajjaj, who said: I asked Abu Abdullah (as) about the hamil (the child in the womb). Imam (as) asked: "And what is the hamil?" I said: "A woman is captured from her land along with her young child, and she claims, 'This is my son.' Similarly, a man is captured and meets his brother, claiming, 'This is my brother,' but they have no evidence except their word." Imam (as) then asked: "And what do the people among you say about this?" I replied: "They do not allow inheritance unless they have proof of the child's birth, especially if the birth occurred during the period of disbelief (before Islam)." Imam (as) said: "Glory be to Allah (swt)! If she continuously acknowledges the child as hers, and if he recognizes his brother, and both of them were sound in mind and body when making such claims, they will both remain firm in their acknowledgment, and they will inherit from one another."

Translation: Bab Ul Qaim Publications — attributed by Thaqalayn·The Arabic above is the original.