﴿ وَيَقُولُ ٱلَّذِينَ كَفَرُوا۟ لَوْلَآ أُنزِلَ عَلَيْهِ ءَايَةٌۭ مِّن رَّبِّهِۦٓ ۗ إِنَّمَآ أَنتَ مُنذِرٌۭ ۖ وَلِكُلِّ قَوْمٍ هَادٍ ﴾

“However, they who are bent on denying the truth [refuse to believe and] say, "Why has no miraculous sign ever been bestowed on him from on high by his Sustainer?" [But] thou art only a warmer; and [in God] all people have a guide.”

(Those who disbelieve) in Muhammad (pbuh) and in the Qur'an (say: If only some portent sign were sent down upon him) why is not some sign sent to him (from his Lord!) to prove his prophethood as it was sent to earlier messengers (Thou art) O Muhammad (a warner only) a warning messenger, (and for every folk a guide) a prophet; it is also said that this means: a caller who calls them to leave error and follow guidance.