Sahih Muslim
The Book of Pilgrimage (Kitab Al-Hajj)
Book Number: 007 / Hadith Number: 2959
A'isha (Allah be pleased with her) reported that (hadrat) Sauda was a bulky lady, so she sought permission from Allah's Messenger (may peace be upon him) to proceed from Muzdalifa (to Mina) in the (latter part of the) night. He granted her permission. 'A'isha said: I wish I had also sought permission from Allah's Messenger (may peace be upon him) as Sauda had. sought permission from him. 'A'isha did not proceed but with the Imam.