Quran 64:12 from Surah At-Taghaabun on Divine Marvels.
وَأَطِيعُواْ ٱللَّهَ وَأَطِيعُواْ ٱلرَّسُولَۚ فَإِن تَوَلَّيۡتُمۡ فَإِنَّمَا عَلَىٰ رَسُولِنَا ٱلۡبَلَٰغُ ٱلۡمُبِينُ
English translation: So obey Allah and obey the Messenger; but if you turn away then only upon Our Messenger (is) the conveyance clear
Transliteration: wa-ati'u al-laha wa-ati'u al-rasula fa-in tawallaytum fa-innama ala rasulina al-balaghu al-mubinu