'Iyad bin Himar (RAA) narrated that the Messenger of Allah (ﷺ) said:
"Allah, the Most High has revealed to me that you (people) should be humble, so that no one transgresses another, or boasts to the other." Related by Muslim. (IT)
English reference (IT): Book 16, Hadith 1570 (IT)
Arabic reference (IT): Book 16, Hadith 1527 (IT)