وَمَا أَمْرُنَا إِلَّا وَاحِدَةٌ كَلَمْحٍ بِالْبَصَرِ
[54:50]
And Our command is but one, as the twinkling of an eye.
And Our Command is but a single (Act),- like the twinkling of an eye.
And Our commandment is but one (commandment), as the twinkling of an eye.