"انَّ ٱلَّذِينَ يَكۡتُمُونَ مَآ أَنزَلۡنَا مِنَ ٱلۡبَيِّنَـٰتِ وَٱلۡهُدَىٰ مِنۢ بَعۡدِ مَا بَيَّنَّـٰهُ لِلنَّاسِ فِى ٱلۡكِتَـٰبِ‌ۙ أُوْلَـٰٓٮِٕكَ يَلۡعَنُہُمُ ٱللَّهُ وَيَلۡعَنُہُمُ ٱللَّـٰعِنُونَ ۔" (سورةالبقرة:۱۵۹)

"SURELY, THOSE WHO CONCEAL WHAT WE HAVE REVEALED OF CLEAR SIGNS AND GUIDANCE - EVEN AFTER WE HAVE EXPLAINED THEM FOR PEOPLE, IN THE BOOK, UPON THEM ALLAH CASTS DAMNATION, AND CURSE THEM THOSE WHO CURSE." (SURAH AL-BAQARAH:159)

These are some of the injunctions coming out of this verse:

1. It is forbidden to conceal knowledge which must be disclosed and disseminated widely. The Holy Prophet ﷺ said:

"Anyone who is asked about something which he knows, in the event that he conceals it, would be brought forth by Allah on the Doomsday harnessed with a rein of fire." (Narrated by Abu Hurayrah and Amr ibn al-Aas and reported by Ibn Majah - Qurtubi)

2. Another very important rule that emerge from this verse is that one who himself does not possess the sound knowledge of religious injunctions underlings should not try to explain them.

3. The third rule we find out is that answers to religious questions which are intricate, deeply involved and way beyond the comprehension level of common people should not be offered before them lest they fall prey to some misunderstanding. The Holy Prophet SAW has said:

"Do not withhold wisdom from those who deserve it, for if you do so, you will be unjust to them; and do not place it before those who do not deserve it, for if you do so, you will be unjust to it."

From Ma'ariful Quran, by Mufti Muhammad Shafi RE