[Pooya/Ali Commentary 29:3] Imam Ali said: " 'Allah knows' means that He examines and tests the believers to distinguish the righteous from the wicked." The Holy Prophet said that with his departure from this world the guidance coming from Allah by revelation through Jibrail will end, but the evil of mischief mongers will continue. Muslims will be tried and tested in times of discord among people so as to distinguish the genuine believers from the bogus pretenders in faith (see commentary of al Bara-at: 64). The Holy Prophet and the Imams in his Ahl ul Bayt are the thoroughly purified ideals for the true believers. The opportunist pretenders deviated from the true path of Allah and did not follow the Imams of the Ahl ul Bayt in order to usurp the temporal authority, but these Imams, in all ages, remain the true guides for all Muslims. The Holy Prophet said: "My Ahl ul Bayt are like the ark of Nuh. Whoso sails on it is safe, but he who holds back shall perish." Also refer to the commentary of Ali Imran: 140 and 141. Even the great prophet Ibrahim was tested (al Baqarah : 124). Everyone is tested and tried (al Baqarah: 155). The greatest test to manifest the highest qualities of a true servant of Allah was held in Karbala in 61 Hijra. See the biography of Imam Husayn "The King of Martyrs" published by our Trust.