وَإِن تُكَذِّبُوا۟ فَقَدْ كَذَّبَ أُمَمٌ مِّن قَبْلِكُمْ ۖ وَمَا عَلَى ٱلرَّسُولِ إِلَّا ٱلْبَلَـٰغُ ٱلْمُبِينُ
If you impugn [the Apostle’s teaching], then [other] nations have impugned [likewise] before you, and the Apostle’s duty is only to communicate in clear terms.