(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." (RU)
Reference (RU): Jami` at-Tirmidhi 2649 (RU)
In-book reference (RU): Book 41, Hadith 5 (RU)
English translation (RU): Vol. 5, Book 39, Hadith 2649 (RU)