Shaikh Wasiullah Allahabadi (Allah have mercy on him) said,

‘An incident from the life of Shaikh Ibrahim bin Adham (Allah have mercy on him) is mentioned in books. The Shaikh said,’ One night I overslept and missed my wird. This disturbed me a lot and I became agitated. This was because in those days I was from the individuals who have faith in their effort and see them (as their own achievement). In its retribution,due to oversleeping, I missed few essential (fardh) religious duties.

I became extremely anxious and cried asking Allah, ‘What is this happening? Having surpassed omission of supererogatory (nafil)  actions now I am missing the essential ones.’

Instantaneously I heard a voice from within,

O Ibrahim! Become Our slave (abd).

By doing so you will find spiritual serenity.

(This means to abandon your own determination and choices and act as per Our decree and guidance). When We make you to oversleep then sleep. And when We command you to get up then rise. Between these two extremes you have no choice of your own.’

Talifaat e Muslih al-Ummat ra, volume 2, page 20