Musnad Ahmad 401:0

The Hadith of Rabah ibn Abd al-Rahman ibn Huwaytib, from his grandmother: Al-Haytham ibn Kharijah narrated to us—Abdullah said: And I heard it myself from Al-Haytham—he said: Hafs ibn Maysarah narrated to us, from Ibn Harmalah, from Abu Thifal al-Murri, that he said: I heard Rabah ibn Abd al-Rahman ibn Huwaytib saying: My grandmother narrated to me that she heard her father saying: I heard the Prophet, peace and blessings of Allah be upon him, saying: "There is no prayer for one who has no ablution, and there is no ablution for one who does not mention Allah the Exalted. And he does not believe in Allah who does not believe in me, and he does not believe in me who does not love the Ansar."