"We returned during the Hajj with the Prophet and some of us said that they had stoned (the Jamarat) with seven stones, and other said that they had done so with six, and no one denounced anyone else." (Using translation from Nasāʾī 3077)
سَعْدٌ رَجَعْنَا فِي الْحِجَّةِ مَعَ النَّبِيِّ ﷺ وَبَعْضُنَا يَقُولُ رَمَيْتُ بِسَبْعٍ وَبَعْضُنَا يَقُولُ رَمَيْتُ بِسِتٍّ فَلَمْ يَعِبْ بَعْضُهُمْ عَلَى بَعْضٍ