Ibn Mas'ud (May Allah be pleased with him) reported:
The Prophet (ﷺ) said, "Envy is permitted only in two cases: A man whom Allah gives wealth, and he disposes of it rightfully, and a man to whom Allah gives knowledge which he applies and teaches it."[Al- Bukhari and Muslim].
App reference: Book 13, Hadith 2
Arabic/English book reference: Book 13, Hadith 1377