Sahl bin Sa'd (May Allah be pleased with him) reported:
The Prophet (ﷺ) 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].
App reference: Book 13, Hadith 4
Arabic/English book reference: Book 13, Hadith 1379