It is narrated from Sayyiduna Salamah (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: May Allah keep the tribe of Aslam safe, and may Allah forgive the tribe of Ghifar. By Allah! I do not say this; this is what Allah says.
Hadith Referenceمسند احمد / مسند المدنيين رضي الله عنهم اجمعين / 16517
Hadith Gradingحکم دارالسلام:صحيح لغيره، وهذا إسناد ضعيف لضعف عمر بن راشد