Stand up so that I should observe prayer (in order to bless) you Anas b. Malik said: I stood up on a mat (belonging to us) which had turned dark on account of its long use. I sprinkled water over it (in order to soften it), and the Messenger of Allah ﷺ stood upon it, and I and an orphan formed a row behind him (the Holy Prophet) and the old woman was behind us, and the Messenger of Allah ﷺ led us in two rak'ahs of prayer and then went back. (Using translation from Muslim 658)
أَنَّ جَدَّتَهُ مُلَيْكَةَ دَعَتْ رَسُولَ اللهِ ﷺ لِطَعَامٍ صَنَعَتْهُ فَأَكَلَ مِنْهُ رَسُولُ اللهِ ﷺ ثُمَّ قَالَ قُومُوا فَأُصَلِّيَ بِكُمْ قَالَ أَنَسٌ فَقُمْتُ إِلَى حَصِيرٍ لَنَا قَدِ اسْوَدَّ مِنْ طُولِ مَا لَبِثَ فَنَضَحْتُهُ بِمَاءٍ فَقَامَ عَلَيْهِ رَسُولُ اللهِ ﷺ وَقُمْتُ أَنَا وَالْيَتِيمُ وَرَاءَهُ وَالْعَجُوزُ مِنْ وَرَائِنَا فَصَلَّى بِنَا رَكْعَتَيْنِ ثُمَّ انْصَرَفَ