Allah, Most High, has decreed Hajj for you. Al-Aqra' bin Habis At-Tamimi said: "Every year, O Messenger of Allah?" But he remained silent, then he said: "If I said yes, it would become obligatory, then you would not hear and obey. Rather it is just one Hajj."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَامَ فَقَالَ إِنَّ اللَّهَ تَعَالَى كَتَبَ عَلَيْكُمُ الْحَجَّ فَقَالَ الأَقْرَعُ بْنُ حَابِسٍ التَّمِيمِيُّ كُلُّ عَامٍ يَا رَسُولَ اللَّهِ فَسَكَتَ فَقَالَ لَوْ قُلْتُ نَعَمْ لَوَجَبَتْ ثُمَّ إِذًا لاَ تَسْمَعُونَ وَلاَ تُطِيعُونَ وَلَكِنَّهُ حَجَّةٌ وَاحِدَةٌ  

[Machine] "The Messenger of Allah ﷺ said, 'Indeed, Allah Almighty has prescribed Hajj upon you.' Al-Aqra' bin Habis said, 'O Messenger of Allah, is it (prescribed) every year?' He replied, 'No, (it is prescribed) only once, and if I had said yes, it would have become obligatory.'"  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ إِنَّ اللهَ ﷻ كَتَبَ عَلَيْكُمُ الْحَجَّ فَقَالَ الْأَقْرَعُ بْنُ حَابِسٍ أَبَدًا يَا رَسُولَ اللهِ قَالَ بَلْحَجَّةٌ وَاحِدَةٌ وَلَوْ قُلْتُ نَعَمْ لَوَجَبَتْ  

Allah, Most High, has decreed Hajj for you. Al-Aqra' bin Habis At-Tamimi said: "Every year, O Messenger of Allah?" But he remained silent, then he said: "If I said yes, it would become obligatory, then you would not hear and obey. Rather it is just one Hajj." (Using translation from Nasāʾī 2620)   

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «يَا قَوْمُ كُتِبَ عَلَيْكُمُ الْحَجُّ» فَقَالَ الْأَقْرَعُ بْنُ حَابِسٍ أَكُلَّ عَامٍ يَا رَسُولَ اللَّهِ؟ فَصَمَتَ رَسُولُ اللَّهِ ﷺ ثُمَّ قَالَ لَا بَلْ حَجَّةً وَاحِدَةً ثُمَّ مَنْ حَجَّ بَعْدَ ذَلِكَ فَهُوَ تَطَوُّعٌ وَلَوْ قُلْتُ نَعَمْ لَوَجَبَتْ عَلَيْكُمْ ثُمَّ إِذًا لَا تَسْمَعُونَ وَلَا تُطِيقُونَ