that the Messenger of Allah (ﷺ) said: "If I was going to appoint anyone of them as a leader without any consultation, I would appoint Ibn Umm 'Abd over them."
Jami` at-Tirmidhi Book 49, Hadith 208
← Previous Hadith "We came to Hudhaifah and said: 'Inform us of the closest to the Messenger of Allah (ﷺ) in guidance and conduct, so that we may take from him and hear from him.' He said: 'The closest of the people in guidance, conduct, and character used to be 'Abdullah bin Mas'ud, until he would hide from us in his house. And the guarded ones (guarded by Allah from straying in word and deed) from the Companions of Muhammad (ﷺ) know that Ibn Umm 'Abd (a nickname for 'Abdullah bin Mas'ud) is from among the most intimately close to Allah of them.'

Jami` at-Tirmidhi Book 49, Hadith 207 Next Hadith → that the Messenger of Allah (ﷺ) said: "If I was going to appoint anyone as a leader without any consultation, I would appoint Ibn Umm 'Abd."

Jami` at-Tirmidhi Book 49, Hadith 209