Arguing During Hajj

If there occurred some argument/quarrel between a man and his companions during Hajj, is his Hajj correct/sound and will it be rewarded even if it was his obligatory "first" Hajj?

His Hajj is correct/sound and will insha'Allah be rewarded as his obligatory Hajj, however, his reward will be reduced according to the severity of the ugly argument/quarrel which took place. So it is upon him to repent to Allah for that, as Allah says:

"And all of you beg Allah to forgive you all, O believers, that you may be successful" [Noble Quran 24:31]

And with Allah lies all success and may Allah send prayers and salutations upon our Prophet (Peace and blessings be upon him) and his family and his companions.

The Permanent Committee for Islamic Research and Fatawa