An-Nisa 4:80

Man yutiAAi arrasoola faqad ataAAaAllaha waman tawalla fama arsalnakaAAalayhim hafeetha

He who obeys the Messenger has obeyed Allāh; but those who turn away - We have not sent you over them as a guardian.

Whoever obeys the Messenger obeys Allah, and whoever turns away, then, We did not send you to stand guard over them.