Sahih Muslim Book - 15, Hadith - 3104

حَدَّثَنَا عَبْدُ بْنُ حُمَيْدٍ أَخْبَرَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنِ الزُّهْرِىِّ عَنْ عَطَاءٍ مَوْلَى سِبَاعٍ عَنْ أُسَامَةَ بْنِ زَيْدٍ أَنَّهُ كَانَ رَدِيفَ رَسُولِ اللَّهِ -صلى الله عليه وسلم- حِينَ أَفَاضَ مِنْ عَرَفَةَ فَلَمَّا جَاءَ الشِّعْبَ أَنَاخَ رَاحِلَتَهُ ثُمَّ ذَهَبَ إِلَى الْغَائِطِ فَلَمَّا رَجَعَ صَبَبْتُ عَلَيْهِ مِنَ الإِدَاوَةِ فَتَوَضَّأَ ثُمَّ رَكِبَ ثُمَّ أَتَى الْمُزْدَلِفَةَ فَجَمَعَ بِهَا بَيْنَ الْمَغْرِبِ وَالْعِشَاءِ.

It was narrated from Usamah bin Zaid that he was riding behind the Messenger of Allah (SAW) when he departed from Arafat. When he came to the pass he halted his mount, then he went to relieved himself. When he came back, I poured water for him from the jug and I performed Wudu, then he rode and came to Al-Muzdalifah, where he joined Maghrib and Isha (prayer).