[Machine] About Abdullah ibn Mas'ud and Ammar ibn Yasir, they used to perform two prostrations during the Hajj. As for the hadith of Abu Musa
عَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ وَعَمَّارِ بْنِ يَاسِرٍ أَنَّهُمَا «كَانَا يَسْجُدَانِ فِي الْحَجِّ سَجْدَتَيْنِ» وَأَمَّا حَدِيثُ أَبِي مُوسَى