وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَزِيدَ بْنِ عَبْدِ اللَّهِ بْنِ قُسَيْطٍ اللَّيْثِيِّ، أَنَّهُ رَأَى سَعِيدَ بْنَ الْمُسَيَّبِ رَعَفَ وَهُوَ يُصَلِّي فَأَتَى حُجْرَةَ أُمِّ سَلَمَةَ زَوْجِ النَّبِيِّ صلى الله عليه وسلم فَأُتِيَ بِوَضُوءٍ فَتَوَضَّأَ ثُمَّ رَجَعَ فَبَنَى عَلَى مَا قَدْ صَلَّى ‏.‏

Yahya related to me from Malik from Yazid ibn Abdullah Qusayt al-Laythi that he saw Said ibn al-Musayyab having a nose-bleed whilepraying. He went off to the room of Umm Salama, the wife of theProphet, may Allah bless him and grant him peace, and water wasbrought to him and he did wudu. He then returned and completed hisprayer. Translation Not Available

Book Ref: Muwatta Imam Malik Book 2 Hadith 80
Web Ref:  Muwatta Imam Malik Book 2 Hadith 50

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