Mishkat al-Masabih 4213
‘Abdallah b. al-Harith b. Jaz’ said:
God’s messenger was brought some bread and meat when he was in the mosque, and he ate and we ate along with him. He then stood up and prayed and we prayed along with him, doing no more than wiping our hands with pebbles. 

Ibn Majah transmitted it.
وَعَنْ عَبْدِ اللَّهِ بْنِ الْحَارِثِ بْنِ جَزْءٍ قَالَ: أَتَى رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بِخُبْزٍ وَلَحْمٍ وَهُوَ فِي الْمَسْجِدِ فَأَكَلَ وَأَكَلْنَا مَعَهُ ثُمَّ قَامَ فَصَلَّى وَصَلَّيْنَا مَعَهُ وَلَمْ نَزِدْ عَلَى أَنْ مَسَحْنَا أَيْدِيَنَا بِالْحَصْبَاءِ. رَوَاهُ ابْن مَاجَه