Riyad as-Salihin, Book 13, Hadith 1379 (In-Book) ⓘ
Sahl bin Sa'd (May Allah be pleased with him) reported: The Prophet said to 'Ali (May Allah be pleased with him), "By Allah, if a single person is guided by Allah through you, it will be better for you than a whole lot of red camels."[Al-Bukhari and Muslim].
وعن سهل بن سعد رضي الله عنه أن النبي صلى الله عليه وسلم قال لعلي رضي الله عنه : "فوالله لأن يهدي الله بك رجلا واحدا خير من حمر النعم" ((متفق عليه))