Musnad Ahmad 1153:6

Hashim narrated to us, he said: Mansur informed us, from Abd al-Rahman ibn al-Qasim, from his father, from Aisha, who said: "The Messenger of Allah, peace and blessings of Allah be upon him, only gave permission to Sawdah bint Zam'ah to depart from Jam' (Muzdalifah) before the dawn, because she was a slow-moving woman."