Surat al-Buhuth (Surah al-Tawbah): the names of the first to make Islam public, who were seven

It is narrated from Abu Rashid al-Hubrani that he said: I saw Sayyiduna al-Miqdad bin al-Aswad (may Allah be pleased with him), the guard of the Messenger of Allah (peace and blessings be upon him), sitting in Hims on one of the chests of the money-changers; because of his size he was spilling over the chest (that is, his body was heavy), and he intended to go out for jihad. I said to him: "(Because of your age and weight) Allah Almighty has already excused you." He said: "Surah al-Buhuth (that is, Surah al-Tawbah) has refused to accept this excuse from us, (in which Allah says): 'Go forth, whether light or heavy.' [Surah al-Tawbah: 41]" The narrator Baqiyyah said that Surah al-Buhuth means Surah al-Tawbah.
This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.
And I have already mentioned, at the beginning of the virtues of Abu Bakr al-Siddiq (may Allah be pleased with him), this hadith of Abdullah bin Mas'ud (may Allah be pleased with him): The first seven people who openly declared their Islam were the Messenger of Allah (peace and blessings be upon him), Abu Bakr, Ammar, his mother Sumayyah, Suhayb, Bilal and al-Miqdad (may Allah be pleased with them).

Asim narrates from Zirr, and he from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him), similar to the previous hadith (about the seven people who were first to accept Islam).