Sahl bin Mu'adh bin Anas narrated from his father that:
The Prophet said: "Whoever teaches some knowledge will have the reward of the one who acts upon it, without that detracting from his reward in the slightest." (AR)
English reference (AR): Vol. 1, Book 1, Hadith 240 (AR)
Arabic reference (AR): Book 1, Hadith 246 (AR)