Narrated Ghailan bin Jarir:
I asked Anas, "Tell me about the name 'Al-Ansar.; Did you call yourselves by it or did Allah call you by it?" He said, "Allah called us by it." We used to visit Anas (at Basra) and he used...
O Allah, I am Your slave and the son of Your male slave and the son of your female slave. My forehead is in Your Hand (i.e. you have control over me). Your Judgment upon me is assured and Your Decree concerning me is...
-> Read More Info: Ahmad 1/391, and Al-Albani graded it authentic.