As we know, the Quran has made mention of it quite clearly where he says:
Fasting has been prescribed upon you, just as it was, upon those before you so that you may achieve taqwa (the consciousness of God).
What we learned from the blessed words of Prophet Muhammad (peace be upon him) when he said:
Whoever has fasted correctly in the month of Ramadan with belief and conviction, expecting a reward from Allah, he or she will achieve forgiveness for everything they’ve done in the past.
They will come out of the month of Ramadan pure and clean, without any sin. May Allah make us from amongst those. Ameen.
And the hadith says that whosoever stands at night in prayer correctly throughout the month of Ramadan for them will be a similar reward on condition that is done with conviction, no laziness. And it is done expecting a reward from Allah.
Remember, when we worship Allah Almighty, we are not doing Him a favor. Instead He has done us a favor. Subhanallah!
May Allah grant us from His mercy.
So once we have achieved this forgiveness, and once we have achieved the levels of piety better than they were prior to Ramadan, what should we do post Ramadan?
One of the signs of an accepted season of fasting and standing in prayer, one of the sings of an accepted Ramadan is that our life changes, even if it was to mean just by a few inches, but the life has changed.
If my life changes after Ramadan, it means my Ramadan was correct.
If my life becomes better after Ramadan, it means my Ramadan was correct.
But if my life goes back to where it was before Ramadan, then I’ve wasted my Ramadan.