Musannaf Ibn Abi Shayba 21:458

Abu Khalid al-Ahmar narrated to us, from Hajjaj, from Uthman ibn Abdullah ibn Mawhab, from Musa ibn Talha, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "There are words which, when the servant says them, the angel places them upon his wing, then ascends with them. He does not pass by any gathering of angels but that they invoke blessings upon them and upon the one who said them, until they are placed before the Most Merciful: 'Glory be to Allah (SubhanAllah), and praise be to Allah (al-Hamdulillah), and there is no god but Allah (la ilaha illa Allah), and Allah is the Greatest (Allahu Akbar), and there is no power and no strength except by Allah (la hawla wa la quwwata illa billah), and glory be to Allah, free from all evil (wa SubhanAllah bara'atan 'an al-su').'"