30:51
وَلَئِنْ أَرْسَلْنَا رِيحًا فَرَأَوْهُ مُصْفَرًّا لَّظَلُّوا۟ مِنۢ بَعْدِهِۦ يَكْفُرُونَ
But if We should send a [bad] wind and they saw [their crops] turned yellow, they would remain thereafter disbelievers.
The Romans
وَلَئِنْ أَرْسَلْنَا رِيحًا فَرَأَوْهُ مُصْفَرًّا لَّظَلُّوا۟ مِنۢ بَعْدِهِۦ يَكْفُرُونَ
But if We should send a [bad] wind and they saw [their crops] turned yellow, they would remain thereafter disbelievers.
Nearby ayahs help place verse 30:51 in sequence and meaning.
وَإِن كَانُوا۟ مِن قَبْلِ أَن يُنَزَّلَ عَلَيْهِم مِّن قَبْلِهِۦ لَمُبْلِسِينَ
Although they were, before it was sent down upon them - before that, in despair.
فَٱنظُرْ إِلَىٰٓ ءَاثَـٰرِ رَحْمَتِ ٱللَّهِ كَيْفَ يُحْىِ ٱلْأَرْضَ بَعْدَ مَوْتِهَآ ۚ إِنَّ ذَٰلِكَ لَمُحْىِ ٱلْمَوْتَىٰ ۖ وَهُوَ عَلَىٰ كُلِّ شَىْءٍ قَدِيرٌ
So observe the effects of the mercy of Allah - how He gives life to the earth after its lifelessness. Indeed, that [same one] will give life to the dead, and He is over all things competent.
فَإِنَّكَ لَا تُسْمِعُ ٱلْمَوْتَىٰ وَلَا تُسْمِعُ ٱلصُّمَّ ٱلدُّعَآءَ إِذَا وَلَّوْا۟ مُدْبِرِينَ
So indeed, you will not make the dead hear, nor will you make the deaf hear the call when they turn their backs, retreating.
وَمَآ أَنتَ بِهَـٰدِ ٱلْعُمْىِ عَن ضَلَـٰلَتِهِمْ ۖ إِن تُسْمِعُ إِلَّا مَن يُؤْمِنُ بِـَٔايَـٰتِنَا فَهُم مُّسْلِمُونَ
And you cannot guide the blind away from their error. You will only make hear those who believe in Our verses so they are Muslims [in submission to Allah].