Quran 6:148 — Livestock (Al-An'am)

The idol worshipers say, "Had GOD willed, we would not practice idolatry, nor would our parents, nor would we prohibit anything." Thus did those before them disbelieve, until they incurred our retribution. Say, "Do you have any proven knowledge that you can show us? You follow nothing but conjecture; you only guess."

[6:147] If they disbelieve you, then say, "Your Lord possesses infinite mercy, but His retribution is unavoidable for the guilty people."

[6:149] Say, "GOD possesses the most powerful argument; if He wills He can guide all of you."