Prohibition of concealing knowledge in the Holy Quran

﴿إِنَّ ٱلَّذِينَ يَكۡتُمُونَ مَآ أَنزَلَ ٱللَّهُ مِنَ ٱلۡكِتَٰبِ وَيَشۡتَرُونَ بِهِۦ ثَمَنٗا قَلِيلًا أُوْلَٰٓئِكَ مَا يَأۡكُلُونَ فِي بُطُونِهِمۡ إِلَّا ٱلنَّارَ وَلَا يُكَلِّمُهُمُ ٱللَّهُ يَوۡمَ ٱلۡقِيَٰمَةِ وَلَا يُزَكِّيهِمۡ وَلَهُمۡ عَذَابٌ أَلِيمٌ ﴾ [Al-Baqarah: 174]

(174) Indeed, they who conceal what Allah has sent down of the Book and exchange it for a small price - those consume not into their bellies except the Fire. And Allah will not speak to them on the Day of Resurrection, nor will He purify them. And they will have a painful punishment.

Surah: Al-Baqarah - Verse: 174 - Juz: 2 - Page: 26

﴿وَإِذۡ أَخَذَ ٱللَّهُ مِيثَٰقَ ٱلَّذِينَ أُوتُواْ ٱلۡكِتَٰبَ لَتُبَيِّنُنَّهُۥ لِلنَّاسِ وَلَا تَكۡتُمُونَهُۥ فَنَبَذُوهُ وَرَآءَ ظُهُورِهِمۡ وَٱشۡتَرَوۡاْ بِهِۦ ثَمَنٗا قَلِيلٗاۖ فَبِئۡسَ مَا يَشۡتَرُونَ ﴾ [Āl-‘Imrān: 187]

(187) And [mention, O Muhammad], when Allah took a covenant from those who were given the Scripture, [saying], "You must make it clear to the people and not conceal it." But they threw it away behind their backs and exchanged it for a small price. And wretched is that which they purchased.

Surah: Āl-‘Imrān - Verse: 187 - Juz: 4 - Page: 75

﴿بِٱلۡبَيِّنَٰتِ وَٱلزُّبُرِۗ وَأَنزَلۡنَآ إِلَيۡكَ ٱلذِّكۡرَ لِتُبَيِّنَ لِلنَّاسِ مَا نُزِّلَ إِلَيۡهِمۡ وَلَعَلَّهُمۡ يَتَفَكَّرُونَ ﴾ [An-Naḥl: 44]

(44) [We sent them] with clear proofs and written ordinances. And We revealed to you the message that you may make clear to the people what was sent down to them and that they might give thought.

Surah: An-Naḥl - Verse: 44 - Juz: 14 - Page: 272

﴿وَٱذۡكُرۡنَ مَا يُتۡلَىٰ فِي بُيُوتِكُنَّ مِنۡ ءَايَٰتِ ٱللَّهِ وَٱلۡحِكۡمَةِۚ إِنَّ ٱللَّهَ كَانَ لَطِيفًا خَبِيرًا ﴾ [Al-Aḥzāb: 34]

(34) And remember what is recited in your houses of the verses of Allah and wisdom. Indeed, Allah is ever Subtle and Acquainted [with all things].

Surah: Al-Aḥzāb - Verse: 34 - Juz: 22 - Page: 422