I heard the Messenger of Allah ﷺ say, "May Allah brighten the face of a man who hears a hadith from us, memorizes it, and conveys it onward. For many a bearer of religious knowledge carries it to one who has deeper understanding than he does, and many a bearer of religious knowledge is not himself a person of deep understanding."
حدثنا مسدد حدثنا يحيى عن شعبة حدثني عمر بن سليمان من ولد عمر بن الخطاب عن عبد الرحمن بن أبان عن أبيه
سمعت رسول الله ﷺ يقول نضر الله امرأ سمع منا حديثا فحفظه حتى يبلغه فرب حامل فقه إلى من هو أفقه منه ورب حامل فقه ليس بفقيه
[Its isnad is sahih]. Reported by Tirmidhi in the Book of Knowledge, chapter on the encouragement to convey what one has heard, no. 2656, and Ibn Majah, no. 4105, from the hadith of Shubah, by this route. Tirmidhi said, "Hasan." Ibn Hibban graded it sahih, no. 72, 73.