that a man said: "O Messenger of Allah! Who is my father?" He said: "Your father is so-and-so." He said: "So (the following) was revealed: O you who believe! Ask not about things which, if made plain to you, may cause you trouble (5:101)."
رَجُلٌ يَا رَسُولَ اللَّهِ مَنْ أَبِي قَالَ أَبُوكَ فُلاَنٌ فَنَزَلَتْ ( يَا أَيُّهَا الَّذِينَ آمَنُوا لاَ تَسْأَلُوا عَنْ أَشْيَاءَ إِنْ تُبْدَ لَكُمْ تَسُؤْكُمْ )