Sulaim b. Qays al-Helaali narrates from Salman al-Muhammadi: I went to the Prophet and saw Husain on his lap. The Prophet was kissing Husains forehead and lips and he said: You are a Sayyid (Master), son of a Sayyid, and father of the Sayyids. You are an Imam, the son of an Imam, and father of the Imams. You are Allahs decisive proof, the son of Allahs decisive proof, and you are the father of nine of Allahs decisive proofs, and the ninth one is the Qaim.
Maqtal al-Husain v 1 p 146 Mawaddah al-Qurba p 95 Yanaabi al-Mawaddah p 168 Ehqaq al-Haqq v 13 p 71 Ghaayah al-Maraam p 46 Oyoon Akhbaar al-Reza (a.s.) v 1 p 52 Al-Khesaal p 475 Behaar al-Anwaar v 36 p 241