Yusuf bin Abdullah bin Salam narrates: I came to Sayyiduna Abu al-Darda' (may Allah be pleased with him) while he was in Syria, and he asked: "My son, what has brought you to this city? And what hardship made you come here?" I said: "Nothing brought me here except the aim of keeping up the bond that existed between you and my father." Then he took my hand and seated me, and I sat leaning against him. Then he said: "How evil is the hour of lying against the Messenger of Allah (peace and blessings be upon him)! I heard the Prophet (peace and blessings be upon him) say: 'There is no Muslim who commits a sin, then performs ablution, then prays two or four rak'ahs, whether obligatory or voluntary, then seeks Allah's forgiveness, except that Allah forgives him.'"
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is narrated from Sayyiduna Abu al-Darda' (may Allah be pleased with him) only with this chain; Sadaqah bin Abi Sahl is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 5026
Hadith Gradingمحدثین:غريب، تفرد به صدقة بن أبي سهل ولم يعرفه الهيثمي
Hadith Takhrij«قال الهيثمي: تفرد به صدقة بن أبي سهل قلت ولم أجد من ذكره «مجمع الزوائد ومنبع الفوائد، ج 1، ص 301»» «أخرجه أحمد فى «مسنده» برقم: 28193، 28194، وابن حجر فى «المطالب العالية» برقم: 572»