Imāms (as) of the Shīʿa are twelve men from the family of the Prophet Mohammad (pbuh) who are, according to Shi'a teachings, successors of the Prophet (pbuh) and the guardians and leaders of the society after the Prophet (pbuh). The first Imam is Imam 'Ali (as) and the other Imams (as) are his and lady Fatima's (as) sons and grandsons.Tere are a lot of hadiths those  prove Imams after prohet are twelve and montion their names . Hadīth of Twelve Caliphs is a hadith by Prophet Mohammad (pbuh) according to which his caliphs or successors are only twelve people, all of whom are from Quraysh. Hadīth of Jabir in the exegesis of the verse, ulul Amr is a hadith from Prophet Mohammad (pbuh) to which the Shi'a appeal to demonstrate the imamate and specify their Imams.The hadith was transmitted by Jabir b. 'Abd Allah al-Ansari. In this hadith, the Prophet (pbuh) explicitly mentioned the Twelve Imams (as) of the Shi'a as well as the title of the Fifth Imam.Hadith of Lawh (the Tablet) of Fatima al-Zahra (as)  is among the authentic narrations which is reported in various traditional sources. Its authenticity and the explicit mention of the names of true successors of the Prophet (pbuh), has placed it among the significant evidences to prove Shi'a Imams' Imama and their rightful immediate successor-ship after the Prophet ( pbuh).