How can I make a person the caliph who is helpless even to divorce his own wife?

How can I make a person the caliph who is helpless even to divorce his own wife?”[1] Ibn Hajar al-Makki writes [1] Tārīkh al-Tabarī, Vol 3, Page 192 “This is an indication towards the event when `Abdullah, during the days of the Prophet (a.s), gave divorce to his wife during the period of menstruation and the Prophet (a.s) instructed `Umar to ask `Abdullah to go to his wife”[1] After rejecting Mughirah’s suggestion, `Umar told the gathering that if he nominated anyone the caliph, there will be no problem because Abū-Bakr too had nominated him, and he (Abū-Bakr) was better than himself!

He added that even if he did not nominate a successor, there would not be any problem, because the Prophet (a.s) did not nominate anyone as well! And he was better than both of them were! In that time `A’ishah sent word through `Abdullah ibn `Umar that he must nominate a successor to save the people from confusion and unrest.

`Umar said that he had given a serious thought to the matter and was of view that `Ali ibn Abi-Talib (a.s), `Uthman ibn `Affan, `Abd al-Rahman ibn `Awf, Sa`d ibn Abi-Waqqas, al-Zubayr ibn al-`Awwam and Talhah ibn `Ubaydullah should form a committee The Prophet (a.s) was happy with those persons during his last days. They are capable that they can select one amongst themselves to be the next caliph.

When he was alone he said that if they unanimously select `Ali (a.s) he will lead the Ummah on the Right Path. `Abdullah ibn `Umar said that if that was his opinion, he ought to nominate `Ali (a.s) for the succession himself. To this `Umar replied, “I do not like to carry the burden both in this life and the Hereafter.”[2] After deciding about the membership of the Shūra Council, `Umar called the selected members to apprise them of the procedure for the selection.

When the six assembled at his place, he told them that he knew they all aspired to be the caliph al-Zubayr did not keep quiet. He said that it was natural that they were desirous of the position. He said that in precedence in accepting Islam and in status they were not less than `Umar. He added that if he, `Umar, could be the caliph, why not they! Ibn Abil-Hadid had said that `Umar was lying mortally injured; therefore al-Zubayr was talking fearlessly.

If it were some other occasion, he would not have dared to talk in that manner. `Umar kept quiet at his talk, but when he commented on the members of the Shūra he indicated that he was upset with al-Zubayr.