Sunan an-Nasa'i, Hadith 3037 ⓘ
It was narrated that Aishah said: "The Prophet allowed Sawdah to leave Jam (Al-Muzdalifah) before dawn because she was a heavyset woman.
أَخْبَرَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا هُشَيْمٌ، قَالَ أَنْبَأَنَا مَنْصُورٌ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ، عَنِ الْقَاسِمِ، عَنْ عَائِشَةَ، قَالَتْ إِنَّمَا أَذِنَ النَّبِيُّ صلى الله عليه وسلم لِسَوْدَةَ فِي الإِفَاضَةِ قَبْلَ الصُّبْحِ مِنْ جَمْعٍ لأَنَّهَا كَانَتِ امْرَأَةً ثَبِطَةً .
also referenced under: Book 24, Hadith 0 (In-Book) & Volume 3, Book 24, Hadith 3040 (DarusSalam)