[Machine] Indeed, Al-Aqra' bin Habis asked the Prophet ﷺ and said, "O Messenger of Allah, is Hajj to be performed every year or once?" He replied, "Once, and whoever wishes may perform it voluntarily." This is an authentic narration, and Abu Sinan is the narrator. They did not exclude Sufyan bin Husayn, who is among the reliable narrators whose narrations are accepted.  

أَنَّ الْأَقْرَعَ بْنَ حَابِسٍ سَأَلَ النَّبِيَّ ﷺ فَقَالَ يَا رَسُولَ اللَّهِ الْحَجُّ فِي كُلِّ سَنَةٍ أَوْ مَرَّةً وَاحِدَةً؟ قَالَ «مَرَّةً وَاحِدَةً فَمَنْ أَرَادَ فَيَتَطَوَّعُ» هَذَا إِسْنَادٌ صَحِيحٌ وَأَبُو سِنَانٍ هَذَا هُوَ الدُّؤَلِيُّ وَلَمْ يُخَرِّجَاهُ فَإِنَّهُمَا لَمْ يُخَرِّجَا سُفْيَانَ بْنَ حُسَيْنٍ وَهُوَ مِنَ الثِّقَاتِ الَّذِينَ يُجْمَعُ حَدِيثُهُمْ