Sayyiduna Ali (may Allah be pleased with him) said: When Hasan (may Allah be pleased with him) was born, I named him Harb. The Prophet (peace and blessings be upon him) said: "What have you named my son?" I said: Harb. He (peace and blessings be upon him) said: "No, rather he is Hasan." When Husayn (may Allah be pleased with him) was born, he (peace and blessings be upon him) asked: "What is his name?" I said: Harb. He (peace and blessings be upon him) said: "No, he is Husayn."
Then when Muhsin was born, he (peace and blessings be upon him) said: "What is my son's name?" I said: Harb. He (peace and blessings be upon him) said: "No, rather he is Muhsin." Then the Prophet (peace and blessings be upon him) said: "I have named these sons of mine after the sons of Harun (peace be upon him): Shabbar, Shabbir and Mushabbir."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13390