﴿ قَدْ أَفْلَحَ مَن زَكَّىٰهَا ﴾

“To a happy state shall indeed attain he who causes this [self] to grow in purity,”

Successful indeed qad the lām of laqad ‘indeed’ has been omitted from it for the sake of brevity will be the one who purifies it purges it of sins