He (a.s) has explained that the opinion of the chosen...

He (a.s) has explained that the opinion of the chosen arbitrator would have been followed and been a sound judgment if he had judged according to the truth and not yielded to the corrupt disputes and desires. As for Abu Musa, he, in his arbitration, did not yield to the truth; rather, he followed his low desires and inclinations. Accordingly, he nominated for the caliphate Abdullah bin Umar while his father had not seen that he was worthy of it.

If he thought that he was worthy of the caliphate, he would nominate him for it or appointed him as one of the members of the Consultative Committee. Besides, the basic condition in the election was that the Muhajireen and the Ansar had to agree on the elected one. This did not happen to him. In his speech, Imam al-Hasan (a.s) has expressed that the arbitration was legal while the Kharijites denied it.

He has indicated that saying that the Prophet (a.s) had appointed Sa’d bin Mu’ath as an arbitrator over the Banu Qurayda. If the arbitration had been illegal, the great Prophet (a.s) would not have followed it. After Imam al-Hasan, Abdullah bin Abbas rose. He lauded and praised Allah, and then he said: “O people, some people have hit the truth through success and consent. Some are satisfied with it (the truth) and some are dissatisfied with it.

As for Abu Musa, he went with guidance to deviation, and as for Amr, he went with deviation to guidance. When they met, Abu Musa withdrew his guidance, and Amr went on his deviation. By Allah, if they had judged due to the Qur’an …Abu Musa walked, and Ali was his Imam and Amr walked while his Imam was Mu’awiya.” After Abdullah bin Abbas had finished his speech, Imam Ali commanded Abdullah bin Ja‘far to deliver a speech.

The later went up the pulpit and said: “O people, this is a matter that Ali is decide on and others are to be satisfied. You had brought Abu Musa and said: ‘We are satisfied with this man; therefore, be satisfied with him.’ By Allah, they did not reform Sham through what they made, nor did they corrupt Iraq, nor did they deaden Ali’s right, or enlivened Mu’awiya’s falsehood. The little followers and Satan’s incitement Woe unto Sa‘d’s mother, Sa‘d is strictness and seriousness!

When the Prophet heard her, he said: “Every mourner is a liar except the one who mourns for Sa‘d!” This has been mentioned in the book Usd al-Ghaba, vol. 2, p. 296. do not remove the truth.