• أَشْكُوا۟
• تَشْتَكِىٓ
• مِشْكَوٰة

Appears 3 times in the Quran.

1. 12:86 قَالَ إِنَّمَآ أَشْكُوا۟ بَثِّى وَحُزْنِىٓ إِلَى ٱللَّهِ وَأَعْلَمُ مِنَ ٱللَّهِ مَا لَا تَعْلَمُونَ

   He said: I only complain of my grief and sorrow to Allah, and I know from Allah what you do not know.
   

2. 24:35 ٱللَّهُ نُورُ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ مَثَلُ نُورِهِۦ كَمِشْكَوٰةٍ فِيهَا مِصْبَاحٌ ٱلْمِصْبَاحُ فِى زُجَاجَةٍ ٱلزُّجَاجَةُ كَأَنَّهَا كَوْكَبٌ دُرِّىٌّ يُوقَدُ مِن شَجَرَةٍ مُّبَٰرَكَةٍ زَيْتُونَةٍ لَّا شَرْقِيَّةٍ وَلَا غَرْبِيَّةٍ يَكَادُ زَيْتُهَا يُضِىٓءُ وَلَوْ لَمْ تَمْسَسْهُ نَارٌ نُّورٌ عَلَىٰ نُورٍ يَهْدِى ٱللَّهُ لِنُورِهِۦ مَن يَشَآءُ وَيَضْرِبُ ٱللَّهُ ٱلْأَمْثَٰلَ لِلنَّاسِ وَٱللَّهُ بِكُلِّ شَىْءٍ عَلِيمٌ

   Allah is the light of the heavens and the earth; a likeness of His light is as a niche in which is a lamp, the lamp is in a glass, (and) the glass is as it were a brightly shining star, lit from a blessed olive-tree, neither eastern nor western, the oil whereof almost gives light though fire touch it not-- light upon light-- Allah guides to His light whom He pleases, and Allah sets forth parables for men, and Allah is Cognizant of all things.
   

3. 58:1 قَدْ سَمِعَ ٱللَّهُ قَوْلَ ٱلَّتِى تُجَٰدِلُكَ فِى زَوْجِهَا وَتَشْتَكِىٓ إِلَى ٱللَّهِ وَٱللَّهُ يَسْمَعُ تَحَاوُرَكُمَآ إِنَّ ٱللَّهَ سَمِيعٌۢ بَصِيرٌ

   Allah indeed knows the plea of her who pleads with you about her husband and complains to Allah, and Allah knows the contentions of both of you; surely Allah is Hearing, Seeing.