Sura al-Shuʿarā 26:89

إِلَّا مَنْ أَتَى ٱللَّـهَ بِقَلْبٍ سَلِيمٍ

illā man ata allāha biqalbin salīmin

"But only he (will prosper) that brings to Allah a sound heart;

Sura al-Ṣaffāt 37:84

إِذْ جَآءَ رَبَّهُۥ بِقَلْبٍ سَلِيمٍ

idh jāa rabbahu biqalbin salīmin

Behold! he approached his Lord with a sound heart.

Sura Qāf 50:33

مَّنْ خَشِىَ ٱلرَّحْمَٰنَ بِٱلْغَيْبِ وَجَآءَ بِقَلْبٍ مُّنِيبٍ

man khashiya l-raḥmāna bil-ghaybi wa-jāʾa biqalbin munībin

"Who feared (Allah) Most Gracious Unseen, and brought a heart turned in devotion (to Him):

Sura Qāf 50:37

إِنَّ فِى ذَٰلِكَ لَذِكْرَىٰ لِمَن كَانَ لَهُۥ قَلْبٌ أَوْ أَلْقَى ٱلسَّمْعَ وَهُوَ شَهِيدٌ

inna fī dhālika la-dhikrā li-man kāna lahu qalbun aw alqā l-samʿa wa-huwa shahīdun

Verily in this is a Message for any that has a heart and understanding or who gives ear and earnestly witnesses (the truth).