حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ إِسْحَاقَ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي طَلْحَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ جَدَّتَهُ، مُلَيْكَةَ دَعَتْ رَسُولَ اللَّهِ صلى الله عليه وسلم لِطَعَامٍ فَأَكَلَ مِنْهُ ثُمَّ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ قُومُوا فَلأُصَلِّيَ لَكُمْ ‏"‏ ‏.‏ قَالَ أَنَسٌ فَقُمْتُ إِلَى حَصِيرٍ لَنَا قَدِ اسْوَدَّ مِنْ طُولِ مَا لُبِسَ فَنَضَحْتُهُ بِمَاءٍ فَقَامَ عَلَيْهِ رَسُولُ اللَّهِ صلى الله عليه وسلم وَصَفَفْتُ أَنَا وَالْيَتِيمُ وَرَاءَهُ وَالْعَجُوزُ مِنْ وَرَائِنَا فَصَلَّى لَنَا رَكْعَتَيْنِ ثُمَّ انْصَرَفَ ‏.‏

Yahya related to me from Malik from Ishaq ibn Abdullah ibn AbiTalha from Anas ibn Malik that his grandmother, Mulayka, invited theMessenger of Allah, may Allah bless him and grant him peace, for foodand he ate some of it. Then the Messenger of Allah, may Allah blesshim and grant him peace, said, "Get up and I will lead you in prayer." Anas said, "I stood up and took a woven mat belonging to usthat had become black through long use and sprinkled it with water,and the Messengerof Allah, may Allah bless him and grant him peace,stood on it. The orphan and I formed a row behind him, and the oldwoman stood behind us. He prayed two rakas with us and then left." Translation Not Available

Book Ref: Muwatta Imam Malik Book 9 Hadith 363
Web Ref:  Muwatta Imam Malik Book 9 Hadith 34