Sahih Muslim 605b
Abu Salama reported Abu Huraira as saying: Iqama was pronounced. ant the people had formed themselves into rows. The Messenger of Allah ﷺ came out and stood at his place, and then pointed out with his hand that we should stand at our places. He then went away and took a bath and water trickled from his head and then led them in prayer.
وَحَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ، حَدَّثَنَا أَبُو عَمْرٍو، - يَعْنِي الأَوْزَاعِيَّ - حَدَّثَنَا الزُّهْرِيُّ، عَنْ أَبِي سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ، قَالَ أُقِيمَتِ الصَّلاَةُ وَصَفَّ النَّاسُ صُفُوفَهُمْ وَخَرَجَ رَسُولُ اللَّهِ ﷺ فَقَامَ مَقَامَهُ فَأَوْمَأَ إِلَيْهِمْ بِيَدِهِ أَنْ " مَكَانَكُمْ " . فَخَرَجَ وَقَدِ اغْتَسَلَ وَرَأْسُهُ يَنْطِفُ الْمَاءَ فَصَلَّى بِهِمْ .