"they seek forgiveness from Allāh, and He forgives them." This is because the purpose of these ḥadīths is not, obviously, to encourage the increase of sins and transgressions, nor merely to inform that Allāh is Forgiving and Merciful, but rather to encourage the increase of seeking forgiveness so that Allāh may forgive one's sins. This is the primary purpose of these ḥadīths, even if some narrators have abbreviated this aspect. And Allāh knows best.

"This is the trustworthy one of this nation, meaning Abū ʿUbaydah." It was narrated by Muslim (1297), al-Ḥākim (3/267), Aḥmad (3/125), and Abū Yaʿlá (2/831) through various chains from Ḥammād ibn Salamah, from Thābit, from Anas: "The people of Yemen came to the Messenger of Allāh (ṣallá Allāhu ʿalayhi wa-sallam) and said: Send with us a man to teach us the sunnah and Islam. He took the hand of Abū ʿUbaydah and said..." and mentioned it. The narration is according to Muslim, and al-Ḥākim's wording is: "to teach us the Quran." He said: "Authentic according to the conditions of Muslim, and they did not narrate it mentioning the Quran." I say: In the ḥadīth, there is an important benefit, which is that a solitary report is a proof in matters of belief, just as it is a proof in rulings. This is because we know necessarily that the Prophet (ṣallá Allāhu ʿalayhi wa-sallam) did not send Abū ʿUbaydah to the people of Yemen to teach them only the rulings, but also the beliefs. If a solitary report did not provide religious knowledge in matters of belief, nor establish a proof therein, then sending Abū ʿUbaydah alone to teach them would be akin to frivolity. And this is something the Lawgiver is far removed from. Thus, it is certainly established that it provides knowledge. This is the intended point, and I have two well-known treatises on this important issue that have been printed multiple times. Let those who wish for details refer to them.