Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrated that the Messenger of Allah (peace and blessings be upon him) sent the weak members of his household to Muzdalifah at night, and said to them: "Do not stone the Jamrah until the sun has risen."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12337