O ye who believe! Ask not questions about things which, if made plain to you, may cause you trouble. But if ye ask about things when the Qur'an is being revealed, they will be made plain to you, Allah will forgive those: for Allah is Oft-forgiving, Most Forbearing. (101)
Tafsir
It has been recorded in the traditions that when the order regarding Hajj was received, the Prophet Muhammad said in a sermon ‘O, people! Hajj has been made compulsory for you.’ On hearing this, a person from the Banu Asad tribe got up and asked: ‘O, Prophet of God! Is it for every year?’ The Prophet Muhammad was very angry and said, ‘By the Lord in whose hands my life is! Had I said “‘Yes”, it would have become compulsory for every year, and having become compulsory for every year, you would not have been able to perform it every year and thus committed denial of truth.’ So, leave out whatever I leave out. When I order anything to be done, do it, and when I prohibit you from doing anything, don’t do it.’ (Tafsir ibn Kathir).
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