´It was narrated that ‘Ali said:` “When the following was revealed: “And Hajj (pilgrimage to Makkah) to the House (Ka’bah) is a duty that mankind owes to Allah, for whoever can bear the way.” [3:97] They asked: ‘O Messenger of Allah, is Hajj every year?’ He remained silent. They asked: ‘Is it every year?’ He said: ‘No. If I had said yes, it would have become obligatory.’ Then the following was revealed: “O you who believe! Ask not about things which, if made plain to you, may cause you trouble.’” [5:101]
Hadith Referenceسنن ابن ماجه / كتاب المناسك / 2884
Hadith Takhrij«سنن الترمذی/الحج 5 ( 814 ) ، ( تحفة الأشراف : 10111 ) ، وقد أخرجہ : مسند احمد ( 1/113 ) ( ضعیف ) » ( سند میں عبدالاعلی ضعیف راوی ہیں ، لیکن متن حدیث نزول آیت کے علاوہ صحیح و ثابت ہے ، ملاحظہ ہو : آگے حدیث نمبر 2885 )