Language:
كتاب الحج
25  
Hajj (Pilgrimage)
(98)
Chapter: Whosoever sent the weak amongst his family (women and children) early (from Al-Muzdalifa to Mina) at night after the moon had set. They stayed at Al Muzdalifa and invoked Allah there and proceeded from there when the moon had set
(98)
باب مَنْ قَدَّمَ ضَعَفَةَ أَهْلِهِ بِلَيْلٍ، فَيَقِفُونَ بِالْمُزْدَلِفَةِ وَيَدْعُونَ وَيُقَدِّمُ إِذَا غَابَ الْقَمَرُ
Sahih al-Bukhari 1677

Narrated Ibn `Abbas:

Allah's Messenger (ﷺ) had sent me from Jam' (i.e. Al-Muzdalifa) at night.

حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ أَيُّوبَ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ بَعَثَنِي رَسُولُ اللَّهِ صلى الله عليه وسلم مِنْ جَمْعٍ بِلَيْلٍ‏.‏
Reference : Sahih al-Bukhari 1677
In-book reference : Book 25, Hadith 157
USC-MSA web (English) reference : Vol. 2, Book 26, Hadith 737
  (deprecated numbering scheme)