Musnad Abu Ya'la al-Mawsili 117:111

Abu Musa Harun ibn Abdullah al-Hammal narrated to us, Abu Dawud al-Tayalisi narrated to us, from al-Hakam ibn Atiyyah, from Thabit, from Anas: That the Prophet, peace and blessings of Allah be upon him, married Umm Salamah for goods whose value was ten dirhams.