It is narrated from Abdul Aziz, he says: Imam Qatadah asked Sayyiduna Anas (may Allah be pleased with him) which supplication the Messenger of Allah (peace and blessings be upon him) used to make most frequently. He said: The Messenger of Allah (peace and blessings be upon him) used to recite this supplication the most: "Allahumma rabbana atina fid-dunya hasanatan wa fil-akhirati hasanatan wa qina 'adhab an-nar" (O our Lord! Grant us good in this world and good in the Hereafter, and save us from the punishment of the Fire). Sayyiduna Anas (may Allah be pleased with him) himself, whether he made a short supplication or a long one, would always include this supplication.