SABA' — Ayat 5

وَالَّذِينَ سَعَوْا فِي آيَاتِنَا مُعَاجِزِينَ أُوْلَئِكَ لَهُمْ عَذَابٌ مِّن رِّجْزٍ أَلِيمٌ

But those who strive against Our verses [seeking] to cause failure - for them will be a painful punishment of foul nature.