This hadith has been reported on the authority of Ibn Umar but through another chain of transmitters.
Sahih Muslim Book 44, Hadith 266
← Previous Hadith This hadith has been transmitted on the authority of Ibn Umar with a slight variation of wording (and the wording) that Allah's Messenger (ﷺ) said this on the pulpit.

Sahih Muslim Book 44, Hadith 265 Next Hadith → The tribes of Ansar, Muzaina and Juhaina and Ghifar and Ashja' and those from Banu 'Abdullah, they are my friends amongst the people and Allah and His Messenger are their protectors.

Sahih Muslim Book 44, Hadith 267