Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates from the Prophet (peace and blessings be upon him), from Sayyiduna al-Ruh al-Amin (peace be upon him): The Lord says: "The servant's bad deeds and good deeds will be brought, and then retribution will be given (the narrator is unsure, or perhaps the words are:) settlements will be made. If even one good deed of his remains, it will make room for him in Paradise."
Imam al-Bazzar recorded it, and its narrators have been declared trustworthy despite weakness in some of them.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب البعث / 18420