It is narrated from Hazrat Anas bin Malik (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) said: Some people from my Ummah will be admitted into Hell; when they are burnt and become like coal, they will be admitted into Paradise. The people of Paradise will ask: Who are these people? It will be said to them: These are the ones who were in Hell.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 12258
Hadith Gradingحکم دارالسلام:إسناده صحيح ، خ : 7450