Tafsir of Ghafir 40:44

فستذكرون ما أقول لكم

And you will remember what I am telling you, means, `you will come to know the truth of what I enjoined upon you and forbade you to do, the advice I gave you and what I explained to you. You will come to know, and you will feel regret at the time when regret will be of no avail.'

وأفوض أمري إلى الله

and my affair I leave it to Allah. means, `I put my trust in Allah and seek His help, and I renounce you utterly.'

إن الله بصير بالعباد

Verily, Allah is the All-Seer of (His) servants. means, He knows all about them, may He be exalted and sanctified, and He guides those who deserve to be guided and sends astray those who deserve to be sent astray; His is the perfect proof, utmost wisdom and mighty power