Quran 22:68 — Pilgrimage (Al-Hajj)

If they argue with you, then say, "GOD is fully aware of everything you do."

[22:67] For each congregation, we have decreed a set of rites that they must uphold. Therefore, they should not dispute with you. You shall continue to invite everyone to your Lord. Most assuredly, you are on the right path.

[22:69] GOD will judge among you on the Day of Resurrection regarding all your disputes.