Sayyiduna Ali (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: “Whoever commits a sin in this world and is punished for it here, then Allah, the Most Just, will not punish His servant again in the Hereafter. And whoever commits a sin and Allah conceals it for him in this world, covers it up and forgives it, then Allah is too generous to punish again for a sin that has already been forgiven and concealed.”
Hadith Referenceمعجم صغير للطبراني / كتاب الحدود / 916
Hadith Gradingمحدثین:إسناده حسن
Hadith Takhrij«إسناده حسن ، وأخرجه الترمذي فى «جامعه» برقم: 606، 2626، قال الشيخ الألباني: ضعيف ، وابن ماجه فى «سننه» برقم: 297، 2604، قال الشيخ الألباني: ضعيف ، والبيهقي فى«سننه الكبير» برقم: 17671، والدارقطني فى «سننه» برقم: 3509، وأحمد فى «مسنده» برقم: 659، وأخرجه الطبراني فى «الأوسط» برقم: 6201، وأخرجه الطبراني فى «الصغير» برقم: 46، وأخرجه الطحاوي فى «شرح مشكل الآثار» برقم: 2181، 2182 قال الشوکانی: إسناد حسن ، تحفة الأحوذي شرح سنن الترمذي: (2 / 327)»
´Narrated Ali bin Abu Talib:` that the Prophet (ﷺ) said: "Whoever is penalized (for a crime) then his punishment has been hastened for him in the world, for Allah is more just than to double the punishment upon His slave in the Hereafter. And whoever does a punishable act and then Allah covers it for him and forgives him, then Allah is more kind than to recount something which He has already forgiven."
Shaykh Dr. Abdur Rahman Freywai
Commentary: Note: (In the chain of narration, although Hajjaj ibn Muhammad al-Misisi is a trustworthy (thiqa) narrator, he became subject to confusion (ikhtilat) after coming to Baghdad shortly before his death. And Abu Ishaq al-Sabi'i is trustworthy (thiqa) but a mudallis (one who practices tadlis) and a narrator who became confused (mukhtalit), and this narration is with 'an'anah (i.e., he narrates with the word "from").)
Source: Sunan al-Tirmidhi – Majlis ‘Ilmi Dar al-Da‘wah, New Delhi Edition, Page: 2626