This, and how many matters became difficult after him*** I mean for the scholars of every age (Clarifying some of the matters on which the Companions differed after the death of the Prophet (peace and blessings be upon him), such as the dispatch of Usamah’s army)

The Shaykh :"This, and how many matters became difficult after him*** I mean for the scholars of every age"
Is it correct or not? How many matters became difficult for the Ummah after the Messenger of Allah (may Allah’s prayers and peace be upon him) became difficult for him. From the very first matter that became difficult for him, the Companions differed after they had differed regarding his washing, shrouding, and where to bury him. They differed regarding the execution of Usamah ibn Zayd’s army, and this is an important issue. The army of Usamah ibn Zayd, since the Messenger of Allah (may Allah’s prayers and peace be upon him) in his lifetime had appointed Usamah ibn Zayd as its commander and the army had set out to the outskirts of Madinah. When the Prophet (may Allah’s prayers and peace be upon him) fell ill, this army did not proceed until he passed away (may Allah’s prayers and peace be upon him). When he passed away, the Companions differed, because when he passed away, the Arabs apostatized, meaning some of the Arabs apostatized. So the Companions differed: should they dispatch this army or keep it to use it in fighting the apostates? So 'Umar and a group of the Companions objected, saying, "Let the army remain so we can use it." But Abu Bakr said: He swore an oath regarding that. 'Umar said: And they dispatched the army. Did this disagreement that occurred lead them to return to the Messenger of Allah (peace and blessings be upon him) in his grave? Absolutely not.