Sayyiduna Ali (may Allah be pleased with him) says: The Prophet (peace and blessings be upon him) said to me: "O Ali! Shall I not teach you a supplication, that if you ask Allah Almighty with it, then even if you are already forgiven, Allah Almighty will forgive your sins." I said: Please do tell me. So he (peace and blessings be upon him) said: "«لَاإِلٰهَإِلَّااللّٰهُالْعَلِيُّالْعَظِيمُلَاإِلٰهَإِلَّااللّٰهُالْعَلِيُّالْكَرِيمُلَاإِلٰهَإِلَّااللّٰهُرَبُّالْعَرْشِالْعَظِيمِ»"
Hadith Referenceمعجم صغير للطبراني / كتاب الأدعية و الأذكار / 959
Hadith Gradingمحدثین:ضعيف
Hadith Takhrij«ضعيف ، أخرجه الترمذي فى «جامعه» برقم: 3504، قال الشيخ الألباني: ضعيف ، وابن حبان فى «صحيحه» برقم: 6928، وأحمد فى «مسنده» برقم: 723، والحاكم فى «مستدركه» برقم: 4695، والنسائي فى «الكبریٰ» برقم: 7630، والطبراني فى «الأوسط» برقم: 3421، 4998، والطبراني فى «الصغير» برقم: 350، 763»
´Ali [may Allah be pleased with him] said:` “The Messenger of Allah (ﷺ) said to me: ‘Should I not teach you some words that if you say them, Allah will forgive you, even if you were already forgiven?’ He said: ‘Say: None has the right to be worshipped by Allah, the Most High, the Magnificent. None has the right to be worshipped by Allah, the Forbearing, the Generous. None has the right to be worshipped but Allah. Glory to Allah, the Lord of the Magnificent Throne. (Lā ilāha illallāhul-`aliyul-`aẓīm, lā ilāha illallāhul-ḥalīmul-karīm, lā ilāha illallāh, subḥān Allāhi rabbil-`arshil-`aẓīm.)’”
Shaykh Dr. Abdur Rahman Freywai
Explanation: 1: Allah, Who is Most High and Exalted, there is no deity worthy of worship except Him, there is no deity except Allah, the Forbearing and Generous (Haleem and Kareem), there is no deity except Allah, Glorified is Allah, Who is the Lord of the Mighty Throne.
Note: (In the chain of narration, "Harith al-A'war" is a weak narrator.)
Source: Sunan al-Tirmidhi – Majlis ‘Ilmi Dar al-Da‘wah, New Delhi Edition, Page: 3504