Musnad Ahmad 26:354

'Affan narrated to us, Shu'bah narrated to us, he said: Abu Ishaq informed us, he said: I heard Abu al-Ahwas, from 'Abdullah, from the Prophet, may Allah bless him and grant him peace, that he used to say: "O Allah, I ask You for piety, guidance, chastity, and self-sufficiency."