Failure to Acknowledge Paternity of Child
28-8-2002 | IslamWeb
Question:
What is the Fatwa for a person who knows that he has a baby that will be raised by a Christian girl in a different country and he does not even acknowledge that the child is yours? What are the consequences for my friend for 20 years who denying that his ex-wife got pregnant by him and assures her of lying that she is pregnant? Three dimensional ultrasound shows the son looks just like my friend. He recently got engaged while knowing that there might be a child involved with his ex-wife. He also abandoned his relationship with me. What kind of advice should he be given especially since he is Hajj and very religious?
Answer:
All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad 
is His slave and Messenger.
The Sharee'ah takes all precautions in the matter of approving one's lineage. If there is any possibility even if it is weak to prove someone's lineage to the one who is married to his/her mother, then the Sharee'ah considers it and approves it.
Therefore, the pregnancy of the divorcee of your friend is considered from him according to the Sharee'ah. He is the father of that child and he is responsible for it. The Prophet said: “The child is for the owner of the bed and stoning is for the person who commits illegal sexual intercourse.” [Al-Bukhari and Muslim]
The above ruling is put into effect as long as it is not confirmed that the child does not belong to him. If it is confirmed that the child is not from him, he has to deny it by performing Li'aan.
For more benefit on Li'aan, please refer to Fataawa 193277, 428203, 122944, 176757, 200749, 88978, 90098 and 84301.
Therefore, you should convince your friend that the mentioned daughter belongs to him according to the Sharee'ah; she traces back to him and inherits from him, and he inherits from her too.
Also, he is responsible for her; therefore, he should take care of her and spend on her.
Allah knows best.