Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) said: "Send blessings upon me abundantly, for it will be a means of purification for you."
Abu Ya'la recorded it; its chain contains Layth bin Abi Sulaym, who is thiqah (trustworthy) and a mudallis (one who practises tadlis).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 2871