The Rites of Hajj (Kitab Al-Manasik Wa'l-Hajj)
Dawud :: Book 10 : Hadith 1737
Narrated Umm Salamah, Ummul Mu'minin:
She heard the Apostle of Allah (peace_be_upon_him) say: If anyone puts on ihram for hajj or umrah from the Aqsa mosque to the sacred mosque , his former and latter sins will be forgiven, or he will be guaranteed Paradise. The narrator Abdullah doubted which of these words he said.