Narrated Mihjan ibn al-Adra': The Messenger of Allah ﷺ entered the mosque and saw a man who had finished his prayer, and was reciting the tashahhud saying: O Allah, I ask you, O Allah, the One, the eternally besought of all, He begetteth not, nor was He begotten, and there is none comparable unto Him, that you may forgive me my sins, you are Most Forgiving, Merciful. He (the Prophet) said: He was forgiven (repeating three times. )
Hadith Referenceسنن ابي داود / أبواب تفريع استفتاح الصلاة / 985
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح, أخرجه النسائي (1302 وسنده صحيح) وصححه ابن خزيمة (724 وسنده صحيح)
Hadith Takhrij« سنن النسائی/السھو 58 (1302)، (تحفة الأشراف: 11218)، وقد أخرجہ: مسند احمد (4/338) (صحیح) »
´Hanzalah bin 'Ali narrated that:` Mihjan bin Al-Adra' narrated to him that the Messenger of Allah (ﷺ) entered the masjid and there was a man who had finished his prayer and he was reciting the tashahhud. He said: "Allahumma inni as'aluka ya Allah! Bi-annakal-Wahidul-Ahad us-Samad, alladhi lam yalid wa lam yowled, wa lam yakun lahu kufuwan ahad, an taghfirali dhunubi, innaka antal-Ghafurur-Rahim (O Allah, I ask of You, O Allah, as You are the One, the Only, the Self-Sufficient Master, Who begets not nor was He begotten, and there is None equal or comparable to Him, forgive me my sins, for You are the Oft-Forgiving, Most Merciful.)" The Messenger of Allah (ﷺ) said: "He has been forgiven," three times.
Hafiz Muhammad Ameen
1302. Commentary:
➊ This great glad tidings from the blessed tongue of the Messenger of Allah (sallallahu alayhi wa sallam) was not only for Hazrat Mihjan (radi Allahu anhu), but for every person who supplicates in this manner. This supplication is also with the Greatest Name (Ism al-A'zam), because the mentioned attributes are unique to the incomparable Essence of Allah, and no one else possesses even a trace of them.
➋ It is commendable to supplicate after completing the prayer and reciting the prescribed remembrances (adhkar).
➌ By saying these words before presenting one's need, Allah certainly accepts the servant's supplication, provided that the remaining conditions are fulfilled, such as: his food, drink, and clothing are lawful (halal).
➍ All the names of Allah are sacred and blessed, but among them are some whose effect is greater than the rest. And Allah knows best.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 1302