The Quran root خ ش ع kh-sh-ʿ

وَاسْتَعِينُوا بِالصَّبْرِ وَالصَّلَاةِ وَإِنَّهَا لَكَبِيرَةٌ إِلَّا عَلَى الْخَاشِعِينَ ٤٥

الْخَاشِعِينَ l-khāshiʿīna · the humble ones

And seek help through patience and prayer; and indeed, it is difficult except for the humbly submissive [to Allāh] (Surah Al-Baqarah, 2:45)

وَإِنَّ مِنْ أَهْلِ الْكِتَابِ لَمَن يُؤْمِنُ بِاللَّهِ وَمَا أُنزِلَ إِلَيْكُمْ وَمَا أُنزِلَ إِلَيْهِمْ خَاشِعِينَ لِلَّهِ لَا يَشْتَرُونَ بِآيَاتِ اللَّهِ ثَمَنًا قَلِيلًا أُولَٰئِكَ لَهُمْ أَجْرُهُمْ عِندَ رَبِّهِمْ إِنَّ اللَّهَ سَرِيعُ الْحِسَابِ ١٩٩

خَاشِعِينَ khāshiʿīna · humbly submissive

And indeed, among the People of the Scripture are those who believe in Allāh and what was revealed to you and what was revealed to them, [being] humbly submissive to Allāh. They do not exchange the verses of Allāh for a small price. Those will have their reward with their Lord. Indeed, Allāh is swift in account. (Surah Ali 'Imran, 3:199)

يَوْمَئِذٍ يَتَّبِعُونَ الدَّاعِيَ لَا عِوَجَ لَهُ وَخَشَعَتِ الْأَصْوَاتُ لِلرَّحْمَٰنِ فَلَا تَسْمَعُ إِلَّا هَمْسًا ١٠٨

وَخَشَعَتِ wakhashaʿati · And (will be) humbled

That Day, they [i.e., everyone] will follow [the call of] the Caller [with] no deviation therefrom, and [all] voices will be stilled before the Most Merciful, so you will not hear except a whisper [of footsteps]. (Surah Taha, 20:108)

وَيَخِرُّونَ لِلْأَذْقَانِ يَبْكُونَ وَيَزِيدُهُمْ خُشُوعًا ١٠٩

خُشُوعًا khushūʿan · (in) humility

And they fall upon their faces weeping, and it [i.e., the Qur’ān] increases them in humble submission. (Surah Al-Isra, 17:109)