It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever commits a sin in this world and receives its punishment, then Allah is too just to punish His servant again. And whoever commits a sin in this world and Allah conceals it and forgives him, then Allah is too generous to reopen the matter of that which He has already forgiven."
Hadith Referenceمسند احمد / مسند الخلفاء الراشدين / 775