ANSWER:

If he gave you his name and your mother was not married to anyone else and was not known to have slept with other men at the time, he is your biological father and he must provide for you and you will inherit him if he is Muslim 

QUESTION: Is a man obliged to provide for his daughter born out of wedlock? She carries his name

Illegitimate children & Lost property | September 8, 2024 6:49 pm
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QUESTION: If a child was conceived out of wedlock but the parents marry before the child was given birth to, can this child be named after his father and inherit from him?
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QUESTION: After my father’s death we discovered he has a 4/5 yrs daughter from an extramarital affair theres no nikah/marriage certificate only birth certificate naming him as the father. Does she have any inheritance rights? Are we obligated to provide for them? Should we offer to take in the child with us? What is the most just, merciful action to protect my father from punishment? Please help.