Hadith.5698 - Muhammad ibn Al-Fudayl narrated from Abu Al-Sabbah and Amr ibn Uthman from Al-Mufaddal from Zayd from Abu Abdullah (as) regarding the inheritance of the son of the cursed woman.
Imam (as) said: "His mother inherits from him."
I asked: "What if his mother dies, and he inherits from her, then he dies - who inherits from him?"
Imam (as) said: "The maternal relatives (Aṣaba) of his mother inherit from him, and he inherits from his maternal uncles."