Does this mean that the companions of the Pledge of the Tree and the Ten Promised Paradise committed the acts mentioned in the text, such as theft, drinking alcohol, slander, and adultery?

The status of the Companions is elevated and revered. The Qur’an and Sunnah have mentioned their virtues, and Muslim scholars have unanimously agreed on their veneration. They are not infallible, but they are the quickest of people to return to Allah. Whoever among them apostatized was deprived of the honor of companionship, unless he repented.

As for the Ten Promised Paradise and the people of the Pledge of the Tree, they are immune from apostasy, and they will certainly enter Paradise according to the texts of the Qur’an and Sunnah.

The author did not mean that the Ten Promised Paradise or the people of the Tree committed all those sins; rather, he meant that some Companions committed some of them, and Allah purified them from these sins through repentance or legal punishment.

Fighting occurred among the Companions during the tribulations of Siffin and the Camel, and some of the Ten Promised Paradise and the people of Ridwan were among them, but they were mujtahids (exercising independent judgment) who made an interpretation (ta’weel), and Allah has forgiven them.

All of this does not contradict the glorification and uprightness of the Companions; for they are human beings, not infallible, and Allah has forgiven them. It is good to assume that they repented.