The Quran root خ ف ي kh-f-y

إِن تُبْدُوا الصَّدَقَاتِ فَنِعِمَّا هِيَ وَإِن تُخْفُوهَا وَتُؤْتُوهَا الْفُقَرَاءَ فَهُوَ خَيْرٌ لَّكُمْ وَيُكَفِّرُ عَنكُم مِّن سَيِّئَاتِكُمْ وَاللَّهُ بِمَا تَعْمَلُونَ خَبِيرٌ ٢٧١

تُخْفُوهَا tukh'fūhā · you keep it secret

If you disclose your charitable expenditures, they are good; but if you conceal them and give them to the poor, it is better for you, and He will remove from you some of your misdeeds [thereby]. And Allāh, of what you do, is [fully] Aware. (Surah Al-Baqarah, 2:271)

لِّلَّهِ مَا فِي السَّمَاوَاتِ وَمَا فِي الْأَرْضِ وَإِن تُبْدُوا مَا فِي أَنفُسِكُمْ أَوْ تُخْفُوهُ يُحَاسِبْكُم بِهِ اللَّهُ فَيَغْفِرُ لِمَن يَشَاءُ وَيُعَذِّبُ مَن يَشَاءُ وَاللَّهُ عَلَىٰ كُلِّ شَيْءٍ قَدِيرٌ ٢٨٤

تُخْفُوهُ tukh'fūhu · you conceal it

To Allāh belongs whatever is in the heavens and whatever is in the earth. Whether you show what is within yourselves or conceal it, Allāh will bring you to account for it. Then He will forgive whom He wills and punish whom He wills, and Allāh is over all things competent. (Surah Al-Baqarah, 2:284)

إِنَّ اللَّهَ لَا يَخْفَىٰ عَلَيْهِ شَيْءٌ فِي الْأَرْضِ وَلَا فِي السَّمَاءِ ٥

يَخْفَىٰ yakhfā · is hidden

Indeed, from Allāh nothing is hidden in the earth nor in the heaven. (Surah Ali 'Imran, 3:5)

يَسْتَخْفُونَ مِنَ النَّاسِ وَلَا يَسْتَخْفُونَ مِنَ اللَّهِ وَهُوَ مَعَهُمْ إِذْ يُبَيِّتُونَ مَا لَا يَرْضَىٰ مِنَ الْقَوْلِ وَكَانَ اللَّهُ بِمَا يَعْمَلُونَ مُحِيطًا ١٠٨

يَسْتَخْفُونَ yastakhfūna · They seek to hide

They conceal [their evil intentions and deeds] from the people, but they cannot conceal [them] from Allāh, and He is with them [in His knowledge] when they spend the night in such as He does not accept of speech. And ever is Allāh, of what they do, encompassing. (Surah An-Nisa, 4:108)

قُلْ مَن يُنَجِّيكُم مِّن ظُلُمَاتِ الْبَرِّ وَالْبَحْرِ تَدْعُونَهُ تَضَرُّعًا وَخُفْيَةً لَّئِنْ أَنجَانَا مِنْ هَٰذِهِ لَنَكُونَنَّ مِنَ الشَّاكِرِينَ ٦٣

وَخُفْيَةً wakhuf'yatan · and secretly

Say, "Who rescues you from the darknesses of the land and sea [when] you call upon Him imploring [aloud] and privately, 'If He should save us from this [crisis], we will surely be among the thankful.'" (Surah Al-An'am, 6:63)

إِذْ نَادَىٰ رَبَّهُ نِدَاءً خَفِيًّا ٣

خَفِيًّا khafiyyan · secret

When he called to his Lord a private call [i.e., supplication]. (Surah Maryam, 19:3)