´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."
Explanation & Benefits
Maulana Ataullah Sajid
Commentary:
The reason for this is that teaching knowledge is also a form of propagation (tabligh), and the reward mentioned for the one who invites to goodness has already been stated in Hadith number: 205 and 206.
Source: Commentary on Sunan Ibn Mājah by Mawlānā ‘Atā’ullāh Sājid, Page: 240