The root ح ص ي (ḥ-ṣ-y) in the Quran

وَءَاتَىٰكُم مِّن كُلِّ مَا سَأَلْتُمُوهُ وَإِن تَعُدُّوا۟ نِعْمَتَ ٱللَّهِ لَا تُحْصُوهَآ إِنَّ ٱلْإِنسَٰنَ لَظَلُومٌ كَفَّارٌ ۝٣٤

And He gave you from all you asked of Him. And if you should count the favor [i.e., blessings] of Allāh, you could not enumerate them. Indeed, mankind is [generally] most unjust and ungrateful.

وَإِن تَعُدُّوا۟ نِعْمَةَ ٱللَّهِ لَا تُحْصُوهَآ إِنَّ ٱللَّهَ لَغَفُورٌ رَّحِيمٌ ۝١٨

And if you should count the favors of Allāh, you could not enumerate them. Indeed, Allāh is Forgiving and Merciful.

ثُمَّ بَعَثْنَٰهُمْ لِنَعْلَمَ أَىُّ ٱلْحِزْبَيْنِ أَحْصَىٰ لِمَا لَبِثُوٓا۟ أَمَدًا ۝١٢

Then We awakened them that We might show which of the two factions was most precise in calculating what [extent] they had remained in time.

وَوُضِعَ ٱلْكِتَٰبُ فَتَرَى ٱلْمُجْرِمِينَ مُشْفِقِينَ مِمَّا فِيهِ وَيَقُولُونَ يَٰوَيْلَتَنَا مَالِ هَٰذَا ٱلْكِتَٰبِ لَا يُغَادِرُ صَغِيرَةً وَلَا كَبِيرَةً إِلَّآ أَحْصَىٰهَا وَوَجَدُوا۟ مَا عَمِلُوا۟ حَاضِرًا وَلَا يَظْلِمُ رَبُّكَ أَحَدًا ۝٤٩

And the record [of deeds] will be placed [open], and you will see the criminals fearful of that within it, and they will say, "Oh, woe to us! What is this book that leaves nothing small or great except that it has enumerated it?" And they will find what they did present [before them]. And your Lord does injustice to no one.

لَّقَدْ أَحْصَىٰهُمْ وَعَدَّهُمْ عَدًّا ۝٩٤

He has enumerated them and counted them a [full] counting.

إِنَّا نَحْنُ نُحْىِ ٱلْمَوْتَىٰ وَنَكْتُبُ مَا قَدَّمُوا۟ وَءَاثَٰرَهُمْ وَكُلَّ شَىْءٍ أَحْصَيْنَٰهُ فِىٓ إِمَامٍ مُّبِينٍ ۝١٢

Indeed, it is We who bring the dead to life and record what they have put forth and what they left behind, and all things We have enumerated in a clear register.

يَوْمَ يَبْعَثُهُمُ ٱللَّهُ جَمِيعًا فَيُنَبِّئُهُم بِمَا عَمِلُوٓا۟ أَحْصَىٰهُ ٱللَّهُ وَنَسُوهُ وَٱللَّهُ عَلَىٰ كُلِّ شَىْءٍ شَهِيدٌ ۝٦

On the Day when Allāh will resurrect them all and inform them of what they did. Allāh had enumerated it, while they forgot it; and Allāh is, over all things, Witness.

يَٰٓأَيُّهَا ٱلنَّبِىُّ إِذَا طَلَّقْتُمُ ٱلنِّسَآءَ فَطَلِّقُوهُنَّ لِعِدَّتِهِنَّ وَأَحْصُوا۟ ٱلْعِدَّةَ وَٱتَّقُوا۟ ٱللَّهَ رَبَّكُمْ لَا تُخْرِجُوهُنَّ مِنۢ بُيُوتِهِنَّ وَلَا يَخْرُجْنَ إِلَّآ أَن يَأْتِينَ بِفَٰحِشَةٍ مُّبَيِّنَةٍ وَتِلْكَ حُدُودُ ٱللَّهِ وَمَن يَتَعَدَّ حُدُودَ ٱللَّهِ فَقَدْ ظَلَمَ نَفْسَهُۥ لَا تَدْرِى لَعَلَّ ٱللَّهَ يُحْدِثُ بَعْدَ ذَٰلِكَ أَمْرًا ۝١

O Prophet, when you [Muslims] divorce women, divorce them for [the commencement of] their waiting period and keep count of the waiting period, and fear Allāh, your Lord. Do not turn them out of their [husbands'] houses, nor should they [themselves] leave [during that period] unless they are committing a clear immorality. And those are the limits [set by] Allāh. And whoever transgresses the limits of Allāh has certainly wronged himself. You know not; perhaps Allāh will bring about after that a [different] matter.

لِّيَعْلَمَ أَن قَدْ أَبْلَغُوا۟ رِسَٰلَٰتِ رَبِّهِمْ وَأَحَاطَ بِمَا لَدَيْهِمْ وَأَحْصَىٰ كُلَّ شَىْءٍ عَدَدًۢا ۝٢٨

That he [i.e., Muḥammad (ﷺ)] may know that they have conveyed the messages of their Lord; and He has encompassed whatever is with them and has enumerated all things in number.

إِنَّ رَبَّكَ يَعْلَمُ أَنَّكَ تَقُومُ أَدْنَىٰ مِن ثُلُثَىِ ٱلَّيْلِ وَنِصْفَهُۥ وَثُلُثَهُۥ وَطَآئِفَةٌ مِّنَ ٱلَّذِينَ مَعَكَ وَٱللَّهُ يُقَدِّرُ ٱلَّيْلَ وَٱلنَّهَارَ عَلِمَ أَن لَّن تُحْصُوهُ فَتَابَ عَلَيْكُمْ فَٱقْرَءُوا۟ مَا تَيَسَّرَ مِنَ ٱلْقُرْءَانِ عَلِمَ أَن سَيَكُونُ مِنكُم مَّرْضَىٰ وَءَاخَرُونَ يَضْرِبُونَ فِى ٱلْأَرْضِ يَبْتَغُونَ مِن فَضْلِ ٱللَّهِ وَءَاخَرُونَ يُقَٰتِلُونَ فِى سَبِيلِ ٱللَّهِ فَٱقْرَءُوا۟ مَا تَيَسَّرَ مِنْهُ وَأَقِيمُوا۟ ٱلصَّلَوٰةَ وَءَاتُوا۟ ٱلزَّكَوٰةَ وَأَقْرِضُوا۟ ٱللَّهَ قَرْضًا حَسَنًا وَمَا تُقَدِّمُوا۟ لِأَنفُسِكُم مِّنْ خَيْرٍ تَجِدُوهُ عِندَ ٱللَّهِ هُوَ خَيْرًا وَأَعْظَمَ أَجْرًا وَٱسْتَغْفِرُوا۟ ٱللَّهَ إِنَّ ٱللَّهَ غَفُورٌ رَّحِيمٌۢ ۝٢٠

Indeed, your Lord knows, [O Muḥammad], that you stand [in prayer] almost two thirds of the night or half of it or a third of it, and [so do] a group of those with you. And Allāh determines [the extent of] the night and the day. He has known that you [Muslims] will not be able to do it and has turned to you in forgiveness, so recite what is easy [for you] of the Qur’ān. He has known that there will be among you those who are ill and others traveling throughout the land seeking [something] of the bounty of Allāh and others fighting for the cause of Allāh. So recite what is easy from it and establish prayer and give zakāh and loan Allāh a goodly loan. And whatever good you put forward for yourselves - you will find it with Allāh. It is better and greater in reward. And seek forgiveness of Allāh. Indeed, Allāh is Forgiving and Merciful.

وَكُلَّ شَىْءٍ أَحْصَيْنَٰهُ كِتَٰبًا ۝٢٩

But all things We have enumerated in writing.