Narrated Anas bin Malik:

A man said, "O Allah's Prophet! Who is my father?" The Prophet (ﷺ) said, "Your father is so-and-so." And then the Divine Verse:-- 'O you who believe! Ask not questions about things..(5.101)

Narrated Anas:

The people started asking the Prophet (ﷺ) too many questions importunately. So one day he ascended the pulpit and said, "You will not ask me any question but I will explain it to you." I looked right and left, and behold, every man was covering his head with his garment and weeping. Then got up a man who, whenever quarreling with somebody, used to be accused of not being the son of his father. He said, "O Allah's Messenger! Who is my father?" The Prophet (ﷺ) replied, "Your father is Hudhaifa." Then `Umar got up and said, "We accept Allah as our Lord, Islam as our religion and Muhammad as our Apostle and we seek refuge with Allah from the evil of afflictions." The Prophet (ﷺ) said, " I have never seen the good and bad like on this day. No doubt, Paradise and Hell was displayed in front of me till I saw them in front of that wall," Qatada said: This Hadith used to be mentioned as an explanation of this Verse:-- 'O you who believe! Ask not questions about things which, if made plain to you, may cause you trouble.' (5.101)

Narrated Anas:

Once the people started asking Allah's Messenger (ﷺ) questions, and they asked so many questions that he became angry and ascended the pulpit and said, "I will answer whatever questions you may ask me today." I looked right and left and saw everyone covering his face with his garment and weeping. Behold ! There was a man who, on quarreling with the people, used to be called as a son of a person other than h is father. He said, "O Allah's Messenger! Who is my father?" The Prophet (ﷺ) replied, "Your father is Hudhaifa." And then `Umar got up and said, "We accept Allah as our Lord, and Islam as (our) religion, and Muhammad as (our) Apostle; and we seek refuge with Allah from the afflictions." Allah's Messenger (ﷺ) said, " I have never seen a day like today in its good and its evil for Paradise and the Hell Fire were displayed in front of me, till I saw them just beyond this wall." Qatada, when relating this Hadith, used to mention the following Verse:-- 'O you who believe! Ask not questions about things which, If made plain to you, May cause you trouble. (5.101)

Narrated Anas:

The Prophet (ﷺ) delivered a sermon the like of which I had never heard before. He said, "If you but knew what I know then you would have laughed little and wept much." On hearing that, the companions of the Prophet (ﷺ) covered their faces and the sound of their weeping was heard. A man said, "Who is my father?" The Prophet (ﷺ) said, "So-and-so." So this Verse was revealed: "Ask not about things which, if made plain to you, may cause you trouble." (5.101)