أَخْبَرَنَا أَبُو الأَشْعَثِ، قَالَ حَدَّثَنَا خَالِدٌ، قَالَ حَدَّثَنَا شُعْبَةُ، أَنَّ الْحَكَمَ، أَخْبَرَهُ قَالَ سَمِعْتُ يَحْيَى بْنَ الْجَزَّارِ، يُحَدِّثُ عَنْ صُهَيْبٍ، قَالَ سَمِعْتُ ابْنَ عَبَّاسٍ، يُحَدِّثُ أَنَّهُ مَرَّ بَيْنَ يَدَىْ رَسُولِ اللَّهِ صلى الله عليه وسلم هُوَ وَغُلاَمٌ مِنْ بَنِي هَاشِمٍ عَلَى حِمَارٍ بَيْنَ يَدَىْ رَسُولِ اللَّهِ صلى الله عليه وسلم وَهُوَ يُصَلِّي فَنَزَلُوا وَدَخَلُوا مَعَهُ فَصَلَّوْا وَلَمْ يَنْصَرِفْ فَجَاءَتْ جَارِيَتَانِ تَسْعَيَانِ مِنْ بَنِي عَبْدِ الْمُطَّلِبِ فَأَخَذَتَا بِرُكْبَتَيْهِ فَفَرَعَ بَيْنَهُمَا وَلَمْ يَنْصَرِفْ ‏.‏

It was narrated that Suhaib said: "I heard Ibn Abbas narrate that he passed in front of the Messenger of Allah (PBUH), he and a young boy of Banu Hashim, riding a donkey in front of the Messenger of Allah(PBUH) when he was praying. Then they dismounted and joined the prayer, and he did not stop praying. Then two young girls ofBanu Abdul-Muttalib started running around and grabbing him by the knees. He separated thembut he did not stop praying." Translation Not Available

Book Ref: Sunan An Nisai Book 9 Hadith 754
Web Ref:  Sunan An Nisai Vol 1 Book 9 Hadith 755