Constant repentance and turning to Allah (awwaab)

وَوَهَبْنَا لِدَاوُۥدَ سُلَيْمَـٰنَ ۚ نِعْمَ ٱلْعَبْدُ ۖ إِنَّهُۥٓ أَوَّابٌ

And to David We gave Solomon. An excellent servant, indeed he was one repeatedly turning back [to Allāh].