Hatha ma tooAAadoona likulli awwabin hafeeth (surah Qaf: 32)

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(50:32) it will be said: 'This is what you were promised, a promise made to everyone who turned much (to Allah) *40 and was watchful of his conduct, *41

Haaza maa too`adoona likulli awwaabin hafeez

*40) The word awwab is very extensive in meaning. It implies the person who might have adopted the way of obedience and Allah's goodwill instead of the way of disobedience and the flesh, who gives up everything that is disapproved by AIIah and adopts everything that is approved by him, who gets alarmed as soon as he swerves a little from the path of worship and obedience and repents and returns to the path of worship and obedience, who remembers Allah much and turns to Him in all matters of life.
*41) The word hafiz means the "one who guards. " This implies the person who takes care of the bounds and duties enjoined by Allah, who guards the trusts imposed by AIIah and avoids the things forbidden by him, who keeps watch over his time, energies and activities to see that none of these is being misemployed or misused, who offers repentance, remains steadfast and keeps it. strong and intact, who examines himself over and over again to see that he is not disobeying his Lord anywhere in word or deed.