A Muslim's resemblance to a disbeliever does no harm

Abu Salamah narrates from Sayyiduna Abu Hurayrah (may Allah be pleased with him); he said that the Messenger of Allah (peace and blessings be upon him) said: "Hell was presented to me, and in it I saw Amr bin Qam'ah bin Khindif, that is Abu Amr, and he was dragging his intestines in Hell. He was the first person to set free sa'ibah (animals, in the name of idols) and to alter the religion (covenant) of Sayyiduna Ibrahim (peace be upon him). And I found him to resemble Aktham bin Abi al-Jawn more than anyone else." The narrator said that Aktham said: O Messenger of Allah! Will my resemblance to him harm me? He (peace and blessings be upon him) said: "No, you are certainly a Muslim and he was a disbeliever."
This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs did not record it.

It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When it is the Day of Resurrection, the disbeliever will be shown his deeds, and he will deny them and dispute. It will be said to him: 'Your neighbours bear witness against you.' He will say: 'They have lied.' Then it will be said: 'Your family and your clan (bear witness).' He will say: 'They have lied.' Then it will be said: 'Swear an oath,' and they will swear. Then Allah Almighty will silence them, and their tongues will bear witness against them, and then He will admit them into Hell."
This hadith has a sahih (authentic) chain, but the two Shaykhs did not record it.