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