(3) باب مَا جَاءَ فِي كِتْمَانِ الْعِلْمِ
Narrated Abu Hurairah:
that the Messenger of Allah (ﷺ) said: "Whoever is asked about some knowledge that he knows, then he conceals it, he will be bridled with bridle of fire." (ID)
Reference (ID): Jami` at-Tirmidhi 2649 (ID)
In-book reference (ID): Book 41, Hadith 5 (ID)
English translation (ID): Vol. 5, Book 39, Hadith 2649 (ID)