Narrated 'Abdullah bin Az-Zubair that a group of riders belonging to Banû Tamîm came to the Prophet (ﷺ) Abu Bakr said (to the Prophet ﷺ), "Appoint Al-Qa'qâ ' bin Ma'bad bin Zurâra as (their) ruler. 'Umar said (to the Prophet (ﷺ) " No ! But appoint Al-Aqra bin." Thereupon Abu Bakr said (to Umar), "You just wanted to oppose me. ' 'Umar replied, I did not want to oppose you." So both of them argued so much that their voices became louder, and then the following Divine Verses were revealed in that connection: " O you who believe ! Do not be forward [i.e. hasten not to decide (in matters of war or religion before Allâh and His Messenger (ﷺ) that you may decide the contrary to what Allâh and His Messenger (ﷺ) may decide)] in the presence of Allâh and His Messenger (ﷺ) (till the end of the Verse)... (V.49:1) [5:653-O.B]