from 'Ali who said: "When (the following) was revealed: And Hajj to the House is a duty that mankind owes to Allah, for those who are able to undertake the journey (3:97). They said: 'O Messenger of Allah! Every year?' But he was silent. So they said: 'O Messenger of Allah! Every year?' He said: 'No. If I were to say yes, then it would be required.' And Allah, Mighty and Sublime is He, revealed O you who believe! Ask not about things which, if made plain to you, may cause you trouble (5:101)."  

لَمَّا نَزَلَتْ ( وَلِِلَّهِ عَلَى النَّاسِ حِجُّ الْبَيْتِ مَنِ اسْتَطَاعَ إِلَيْهِ سَبِيلاً ) قَالُوا يَا رَسُولَ اللَّهِ فِي كُلِّ عَامٍ فَسَكَتَ قَالُوا يَا رَسُولَ اللَّهِ فِي كُلِّ عَامٍ قَالَ لاَ وَلَوْ قُلْتُ نَعَمْ لَوَجَبَتْ فَأَنْزَلَ اللَّهُ ( يَا أَيُّهَا الَّذِينَ آمَنُوا لاَ تَسْأَلُوا عَنْ أَشْيَاءَ إِنْ تُبْدَ لَكُمْ تَسُؤْكُمْ )  

“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]  

لَمَّا نَزَلَتْ {وَلِلَّهِ عَلَى النَّاسِ حِجُّ الْبَيْتِ مَنِ اسْتَطَاعَ إِلَيْهِ سَبِيلاً} قَالُوا يَا رَسُولَ اللَّهِ الْحَجُّ فِي كُلِّ عَامٍ فَسَكَتَ ثُمَّ قَالُوا أَفِي كُلِّ عَامٍ فَقَالَ لاَ وَلَوْ قُلْتُ نَعَمْ لَوَجَبَتْ فَنَزَلَتْ {يَا أَيُّهَا الَّذِينَ آمَنُوا لاَ تَسْأَلُوا عَنْ أَشْيَاءَ إِنْ تُبْدَ لَكُمْ تَسُؤْكُمْ }  

When this verse ʿAnd Hajj (pilgrimage to Makkah) to the house (Kaʿbah) is a duty that mankind owes to Allah, those who can afford the expenses (for oneʿs conveyance, provision and residence)ʿ [Al-ʿImran 3:97] was revealed, they said: O Messenger of Allah ﷺ, is it every year? He remained silent. Then they said: Is it every year? He remained silent, Then they said: Is it every year? He said: ʿNo, if I said yes, it would be obligatory.ʿ Then Allah revealed the words: ʿO you who believe! Ask not about things which, if made plain to you, may cause you troubleʿ [Al-Ma’idah 5:101] up to the end of the Αyah.  

لَمَّا نَزَلَتْ هَذِهِ الْآيَةُ {وَلِلَّهِ عَلَى النَّاسِ حِجُّ الْبَيْتِ مَنِ اسْتَطَاعَ إِلَيْهِ سَبِيلًا} [آل عمران 97] قَالُوا يَا رَسُولَ اللهِ أَفِي كُلِّ عَامٍ؟ فَسَكَتَ فَقَالُوا أَفِي كُلِّ عَامٍ؟ فَسَكَتَ قَالَ ثُمَّ قَالُوا أَفِي كُلِّ عَامٍ؟ فَقَالَ لَا وَلَوْ قُلْتُ نَعَمْ لَوَجَبَتْ فَأَنْزَلَ اللهُ تَعَالَى {يَا أَيُّهَا الَّذِينَ آمَنُوا لَا تَسْأَلُوا عَنْ أَشْيَاءَ إِنْ تُبْدَ لَكُمْ تَسُؤْكُمْ} [المائدة 101] إِلَى آخِرِ الْآيَةِ  

When this verse ʿAnd Hajj (pilgrimage to Makkah) to the house (Kaʿbah) is a duty that mankind owes to Allah, those who can afford the expenses (for oneʿs conveyance, provision and residence)ʿ [Al-ʿImran 3:97] was revealed, they said: O Messenger of Allah ﷺ, is it every year? He remained silent. Then they said: Is it every year? He remained silent, Then they said: Is it every year? He said: ʿNo, if I said yes, it would be obligatory.ʿ Then Allah revealed the words: ʿO you who believe! Ask not about things which, if made plain to you, may cause you troubleʿ [Al-Ma’idah 5:101] up to the end of the Αyah. (Using translation from Aḥmad 905)  

لَمَّا نَزَلَتْ هَذِهِ الْآيَةُ {وَلِلَّهِ عَلَى النَّاسِ حِجُّ الْبَيْتِ مَنِ اسْتَطَاعَ إِلَيْهِ سَبِيلًا} [آل عمران 97] قَالُوا يَا رَسُولَ اللَّهِ أفِي كُلِّ عَامٍ؟ فَسَكَتَ ثُمَّ قَالُوا أَفِي كُلِّ عَامِ؟ فَسَكَتَ ثُمَّ قَالُوا أَفِي كُلِّ عَامٍ؟ قَالَ لَا وَلَوْ قُلْتُ نَعَمْ لَوَجَبَتْ فَأَنْزَلَ اللَّهُ ﷻ {يَا أَيُّهَا الَّذِينَ آمَنُوا لَا تَسْأَلُوا عَنْ أَشْيَاءَ إِنْ تُبْدَ لَكُمْ تَسُؤْكُمْ} [المائدة 101]  

" عَنْ عَلِىٍّ قَالَ: لَمَّا نَزَلَتْ هَذِه الآيَةُ {وَلِلَّهِ عَلَى النَّاسِ حِجُّ الْبَيْتِ مَنِ اسْتَطَاعَ إِلَيْهِ سَبِيلًا} وقَالُوا يَا رَسُولَ الله: أفِى كُلِّ عَامٍ؟ فَسَكَتَ، فَقَالُوا: أَفِى كُلِّ عَامٍ؟ فَسَكَتَ، ثُمَّ قَالُوا: افِى كُل عَامٍ؟ قَالَ: لاَ. وَلَوْ قُلتُ: نَعَمْ لَوَجَبَتْ، فأنْزَلَ الله {يَاأَيُّهَا آمَنُوا لَا تَسْأَلُوا عَنْ أَشْيَاءَ إِنْ تُبْدَ لَكُمْ تَسُؤْكُمْ} إِلَى آخِرِ الآيَةِ ".