Musnad Abu Ya'la al-Mawsili 160:14

Abu Kurayb narrated to us, Ibn Abi Fudayk narrated to us, from Muhammad ibn Musa ibn Abi Abdullah, from Ya'qub ibn Salamah al-Laythi, from his father, from Abu Hurayrah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "There is no prayer for the one who has no ablution, and there is no ablution for the one who does not mention the name of Allah upon it."