كتاب الحج
15  
The Book of Pilgrimage
(47)
Chapter: Departing from 'Arafat to Al-Muzdalifah. It is recommended to pray Maghrib and 'Isha together in Al-Muzdalifah on this night
(47)
باب الإِفَاضَةِ مِنْ عَرَفَاتٍ إِلَى الْمُزْدَلِفَةِ وَاسْتِحْبَابِ صَلاَتَىِ الْمَغْرِبِ وَالْعِشَاءِ جَمْعًا بِالْمُزْدَلِفَةِ فِي هَذِهِ اللَّيْلَةِ
Sahih Muslim 1286 b

Hisham (Allah be pleased with him) reported from his father:

Usama (Allah be pleased with him) was asked in my presence or I asked Usama b. Zaid andhe rode behind Allah's Messenger (ﷺ) as he came back from 'Arafat. I said (to him): How did Allah's Messenger (ﷺ) journey as he came back from 'Arafat? Thereupon he said: He made it (his riding camel) walk at a slow speed, and when he found an open space, he made it walk briskly.
وَحَدَّثَنَا أَبُو الرَّبِيعِ الزَّهْرَانِيُّ، وَقُتَيْبَةُ بْنُ سَعِيدٍ، جَمِيعًا عَنْ حَمَّادِ بْنِ زَيْدٍ، - قَالَ أَبُو الرَّبِيعِ حَدَّثَنَا حَمَّادٌ، - حَدَّثَنَا هِشَامٌ، عَنْ أَبِيهِ، قَالَ سُئِلَ أُسَامَةُ وَأَنَا شَاهِدٌ، أَوْ قَالَ سَأَلْتُ أُسَامَةَ بْنَ زَيْدٍ وَكَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم أَرْدَفَهُ مِنْ عَرَفَاتٍ قُلْتُ كَيْفَ كَانَ يَسِيرُ رَسُولُ اللَّهِ صلى الله عليه وسلم حِينَ أَفَاضَ مِنْ عَرَفَةَ قَالَ كَانَ يَسِيرُ الْعَنَقَ فَإِذَا وَجَدَ فَجْوَةً نَصَّ ‏.‏
Reference : Sahih Muslim 1286b
In-book reference : Book 15, Hadith 311
USC-MSA web (English) reference : Book 7, Hadith 2948
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