Fatir 35:4

Wa-in yukaththibooka faqad kuththibatrusulun min qablika wa-ila Allahi turjaAAu al-omoor

And if they deny you, [O Muḥammad] - already were messengers denied before you. And to Allāh are returned [all] matters.

(O Prophet,) if they reject you, (it is not something new, because) many messengers have been rejected before you. It is to Allah that all matters are to be referred.