Or that He would not seize them during their [usual] activity, and they could not cause failure?
The Saheeh International Quran Translation
أَوْ يَأْخُذَهُمْ فِى تَقَلُّبِهِمْ فَمَا هُم بِمُعْجِزِينَOr that He would not seize them during their [usual] activity, and they could not cause failure?