AR-RUUM — Ayat 51

وَلَئِنْ أَرْسَلْنَا رِيحًا فَرَأَوْهُ مُصْفَرًّا لَّظَلُّوا مِن بَعْدِهِ يَكْفُرُونَ

But if We should send a [bad] wind and they saw [their crops] turned yellow, they would remain thereafter disbelievers.