Mishkat al-Masabih #2308

‘Abd ar-Rahman b. Abu Bakra said that he remarked to his father that he had heard him say every morning, “O God, grant me soundness in my body; O God, grant me soundness in my hearing; O God, grant me soundness in my sight. There is no god but Thee and that he repeated it three times morning and evening. He replied, "Sonny, I heard God’s messenger using these words as a supplication and I like to follow his practice." Abu Dawud transmitted it.