they do not believe (in reality) until they make you a judge...

they do not believe (in reality) until they make you a judge of that which has become a matter of disagreement among them, and then do not find any straitness in their hearts as to what you have decided and submit with entire submission. (Qur’an, Surah Nisa 4:65) As submission to the commands of the Prophet and Imams (as) with that which is related to ones life, relatives and property, is a sign of perfection of faith.

Among the proofs of essentiality of Bayyat with all Imams (as) is a tradition that is mentioned in the Sermon of Ghadeer Day quoted from the Messenger of Allah (S) in which he (S) commanded the people to give Bayyat to Amirul Momineen (as), Hasan (as) and Husain (as) and the Imams from the progeny of Husain (as) and the Prophet reminded them of the pledge to obey them, even though they were all not contemporary to the people of that time.

It was only done so because it is obligatory to believe in the heart and make a firm pledge to follow and help…