Sahih Muslim
Sahih Muslim 1280g
حَدَّثَنَا عَبْدُ بْنُ حُمَيْدٍ، أَخْبَرَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، 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 .
Usama ibn Zayd reported that he rode behind the Messenger of Allah when he departed from Arafat. When he reached the ravine, he made his mount kneel and went to relieve himself. When he returned, I poured water for him from a waterskin, and he performed ablution. Then he mounted and came to Muzdalifa, where he combined Maghrib and Isha.