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Suhayb ibn Sinān Ar-Rūmi (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "How wonderful the affair of the believer is! Indeed, all of his affairs are good for him. This is for no one but the believer. If something good happens to him, he is grateful to Allah, which is good for him. And if something bad happens to him, he has patience, which is good for him." [Muslim].