أَخْبَرَنَا عَلِيُّ بْنُ خَشْرَمٍ، قَالَ حَدَّثَنَا عِيسَى، عَنِ الأَعْمَشِ، عَنْ مُسْلِمٍ، عَنْ مَسْرُوقٍ، عَنِ الْمُغِيرَةِ بْنِ شُعْبَةَ، قَالَ خَرَجَ النَّبِيُّ صلى الله عليه وسلم لِحَاجَتِهِ فَلَمَّا رَجَعَ تَلَقَّيْتُهُ بِإِدَاوَةٍ فَصَبَبْتُ عَلَيْهِ فَغَسَلَ يَدَيْهِ ثُمَّ غَسَلَ وَجْهَهُ ثُمَّ ذَهَبَ لِيَغْسِلَ ذِرَاعَيْهِ فَضَاقَتْ بِهِ الْجُبَّةُ فَأَخْرَجَهُمَا مِنْ أَسْفَلِ الْجُبَّةِ فَغَسَلَهُمَا وَمَسَحَ عَلَى خُفَّيْهِ ثُمَّ صَلَّى بِنَا ‏.‏

It was narrated that Al-Mughirah bin Shu'bah said: "The Prophet (PBUH) went out to relieve himself, and when he came back, I met him with a vessel (of water). I poured some for him and he washed his hands, then he washed his face. Then he wanted to wash his forearms but his Jubbah was too tight, so he brought them out from beneath the Jubbah to wash them, and he wiped over his Khuffs, then he led us in prayer." Translation Not Available

Book Ref: Sunan An Nisai Book 1 Hadith 123
Web Ref:  Sunan An Nisai Vol 1 Book 1 Hadith 123