Riyad as-Salihin
Riyad as-Salihin 1390
Virtues of Knowledge which is Learnt and Taught for the sake of Allah
Arabic hadith text
وعن أبي هريرة رضي الله عنه قال: قال رسول الله صلى الله عليه وسلم : "من سئل عن علم فكتمه ألجم يوم القيامة بلجام من نار" ((رواه أبو داود والترمذي، وقال: حديث حسن.
Translation
Abu Hurairah (May Allah be pleased with him) reported
The Messenger of Allah (ﷺ) said, "He who is asked about knowledge (of religion) and conceals it, will be bridled with a bridle of fire on the Day of Resurrection."[Abu Dawud and At- Tirmidhi].