Sahih Muslim 1293
Sahih Muslim · Book 15: The Book of Pilgrimage · It is recommended to send the weak among women and others ahead from Al-Muzdalifah to Mina at the end of the night, before it gets crowded, but it is recommended for others to stay there until they have prayed Subh in Al-Muzdalifah
وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ ، حَدَّثَنَا عَمْرٌو ، عَنْ عَطَاءٍ ، عَنِ ابْنِ عَبَّاسٍ ، قَالَ كُنْتُ فِيمَنْ قَدَّمَ رَسُولُ اللَّهِ صلى الله عليه وسلم فِي ضَعَفَةِ أَهْلِهِ .
This hadith has been transmitted by Ibn 'Abbas (Allah be pleased with them) with a slight variation of words.