Where should the imam put his sandals when he leads the people in prayer?

Sunan an-Nasa'i · Book 9 · Hadith 776

أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، وَشُعَيْبُ بْنُ يُوسُفَ، عَنْ يَحْيَى، عَنِ ابْنِ جُرَيْجٍ، قَالَ أَخْبَرَنِي مُحَمَّدُ بْنُ عَبَّادٍ، عَنْ عَبْدِ اللَّهِ بْنِ سُفْيَانَ، عَنْ عَبْدِ اللَّهِ بْنِ السَّائِبِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم صَلَّى يَوْمَ الْفَتْحِ فَوَضَعَ نَعْلَيْهِ عَنْ يَسَارِهِ ‏.‏

It was narrated from Abdullah bin As Saib that the Messenger of Allah(ﷺ) prayed on the day of Conquest (of Makkah), and he put his sandals to his left.