42:48
فَإِنْ أَعْرَضُوا۟ فَمَآ أَرْسَلْنَـٰكَ عَلَيْهِمْ حَفِيظًا ۖ إِنْ عَلَيْكَ إِلَّا ٱلْبَلَـٰغُ ۗ وَإِنَّآ إِذَآ أَذَقْنَا ٱلْإِنسَـٰنَ مِنَّا رَحْمَةً فَرِحَ بِهَا ۖ وَإِن تُصِبْهُمْ سَيِّئَةٌۢ بِمَا قَدَّمَتْ أَيْدِيهِمْ فَإِنَّ ٱلْإِنسَـٰنَ كَفُورٌ
But if they turn away - then We have not sent you, [O Muhammad], over them as a guardian; upon you is only [the duty of] notification. And indeed, when We let man taste mercy from us, he rejoices in it; but if evil afflicts him for what his hands have put forth, then indeed, man is ungrateful.
Context in Surah Ash-Shura
Nearby ayahs help place verse 42:48 in sequence and meaning.
وَمَا كَانَ لَهُم مِّنْ أَوْلِيَآءَ يَنصُرُونَهُم مِّن دُونِ ٱللَّهِ ۗ وَمَن يُضْلِلِ ٱللَّهُ فَمَا لَهُۥ مِن سَبِيلٍ
And there will not be for them any allies to aid them other than Allah. And whoever Allah sends astray - for him there is no way.
ٱسْتَجِيبُوا۟ لِرَبِّكُم مِّن قَبْلِ أَن يَأْتِىَ يَوْمٌ لَّا مَرَدَّ لَهُۥ مِنَ ٱللَّهِ ۚ مَا لَكُم مِّن مَّلْجَإٍ يَوْمَئِذٍ وَمَا لَكُم مِّن نَّكِيرٍ
Respond to your Lord before a Day comes from Allah of which there is no repelling. No refuge will you have that day, nor for you will there be any denial.
لِّلَّهِ مُلْكُ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ ۚ يَخْلُقُ مَا يَشَآءُ ۚ يَهَبُ لِمَن يَشَآءُ إِنَـٰثًا وَيَهَبُ لِمَن يَشَآءُ ٱلذُّكُورَ
To Allah belongs the dominion of the heavens and the earth; He creates what he wills. He gives to whom He wills female [children], and He gives to whom He wills males.
أَوْ يُزَوِّجُهُمْ ذُكْرَانًا وَإِنَـٰثًا ۖ وَيَجْعَلُ مَن يَشَآءُ عَقِيمًا ۚ إِنَّهُۥ عَلِيمٌ قَدِيرٌ
Or He makes them [both] males and females, and He renders whom He wills barren. Indeed, He is Knowing and Competent.