Sahih Muslim
The Book of Pilgrimage (Kitab Al-Hajj)
Book Number: 007 / Hadith Number: 3016
Ibn Umar (Allah be pleased with them) reported that al-'A'bbas b. Abd al-Muttalib (Allah be pleased with him) sought permission from Allah's Messenger (may peace be upon him) to spend in Mecca the nights (which be was required to spend) at Mina on account of his office of supplier of water, and he (the Holy Prophet) granted him permission.