Volume 2, Book 24, Number 490:
Narrated Ibn Masud:
Volume 2 – 324 / 1700
SAHIH BUKHARI VOLUME 2 > BOOK 24: OBLIGATORY CHARITY TAX (ZAKAT)
I heard the Prophet saying, “There is no envy except in two: a person whom Allah has given wealth
and he spends it in the right way, and a person whom Allah has given wisdom (i.e. religious know –
ledge) and he gives his decisions accordingly and teaches it to the others.”