Musannaf Ibn Abi Shayba 21:279

Al-Fadl ibn Dukayn narrated to us, Abdullah ibn Amir narrated to us, from Isma'il, from his father, from Abu Hurayrah, from the Prophet, may Allah bless him and grant him peace, that he used to say: "O Allah, I ask You by [the fact] that You are the First, so there is nothing before You; and the Last, so there is nothing after You; and the Manifest, so there is nothing above You; and the Hidden, so there is nothing beneath You; that You settle the debt for us and enrich us from poverty."