Sayyiduna Mihjan bin al-Adra' (may Allah be pleased with him) relates that the Messenger of Allah (peace and blessings be upon him) entered the mosque, and there was a man who, having prayed, was making this supplication in the tashahhud: 'Allahumma inni as'aluka billahil-Ahadis-Samad, alladhi lam yalid wa lam yulad, wa lam yakun lahu kufuwan ahad, an taghfira li dhunubi, innaka antal-Ghafurur-Rahim' (O Allah, I ask You by virtue of Your being One and Self-Sufficient, the One who neither begot nor was begotten, and to whom no one is equal, that You forgive my sins; indeed You alone are the Most Forgiving, the Most Merciful). On hearing this, he (peace and blessings be upon him) said three times: "He has been forgiven, he has been forgiven, he has been forgiven." This hadith is sahih on the condition of the two Shaykhs, but they did not record it.