Wuhayb was Ibn Mufaddal al-Ghifari, a Companion who took part in the conquest of Egypt and settled there.
Al-Humaydi also transmitted it in his Musnad (384): Sufyan narrated to us, saying: Ibn Jurayj narrated to us, saying: I heard Abu Sa‘id al-A‘ma relate from Ata ibn Abi Rabah, who said:
“Abu Ayyub set out for Uqbah ibn Amir, who was in Egypt, to ask him about a hadith he had heard from the Messenger of Allah, peace and blessings be upon him. No one remained who had heard it from the Messenger of Allah, peace and blessings be upon him, apart from himself and Uqbah. When he arrived, he went to the home of Maslamah ibn Makhlad al-Ansari, the governor of Egypt. He was informed of it, so he hurried out to him and embraced him. Then he said: ‘What has brought you here, Abu Ayyub?’ He replied: ‘A hadith which I heard from the Messenger of Allah, peace and blessings be upon him, and no one remains who heard it from the Messenger of Allah, peace and blessings be upon him, apart from Uqbah and myself. So send someone to direct me to his home.’ He therefore sent someone with him to direct him to Uqbah’s home. Uqbah was informed of it, so he hurried out to him and embraced him, saying: ‘What has brought you here, Abu Ayyub?’ He replied: ‘A hadith which I heard from the Messenger of Allah, peace and blessings be upon him, concerning the concealing of a believer’s faults; no one remains who heard it apart from you and me.’ Uqbah said: ‘Yes, I heard the Messenger of Allah, peace and blessings be upon him, say’”—and he mentioned it—in the wording: “Whoever conceals a believer’s disgrace in this world, Allah will conceal him on the Day of Resurrection.” Abu Ayyub said to him: ‘You have spoken the truth.’ Then Abu Ayyub returned to his mount, rode it, and set out back for Madinah. The gift from Maslamah ibn Makhlad did not catch up with him until al-Arish, Egypt.”
Al-Hakim also transmitted it in Ma‘rifat ‘Ulum al-Hadith (pp. 7–8) from al-Humaydi; Ahmad (4/153) transmitted it in abbreviated form from Sufyan—who was Ibn Uyaynah—and Ibn Abd al-Barr (1/93) cited it without a complete chain.
I say: Its narrators are trustworthy narrators of al-Bukhari and Muslim, apart from Abu Sa‘id al-A‘ma—also called Abu Sa‘d al-A‘ma—who has a biographical entry in al-Ta‘jil (p. 488), from which it may be inferred that Ibn Jurayj was the only one to narrate from him; thus, he is unknown.
Ahmad (4/104) narrated from Makhul that Uqbah came to Maslamah ibn Makhlad, who was the governor of Egypt. There had been some issue between him and the gatekeeper, but Maslamah heard his voice and granted him admission. Uqbah said: ‘I have not come to visit you; rather, I have come to you for a need. Do you remember the day when the Messenger of Allah, peace and blessings be upon him, said:’