Answered by Ustadh Tabraze Azam
Question: Assalam alaikum,
I have a cousin brother who is around 7 to 8 yrs elder than me. He calls me betaa (son in urdu) for fun. I don’t like it. I even don’t like to tell him to stop.
Is it allowed in Islam to call anyone son except your child?
Answer: Wa alaikum assalam wa rahmatullah,
What is prohibited is denying your ascription and lineage to your father. As for somebody calling another person “son,” out of affection or love, there’s nothing wrong with it, as is the case if it’s said in jest.
Please also see: Can a Man Change His Last Name?
And Allah Most High alone knows best.
Checked & Approved by Shaykh Faraz Rabbani