Sunan Ibn Majah 240
Sahl bin Mu'adh bin Anas narrated from his father that:
The Prophet ﷺ 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."
حَدَّثَنَا أَحْمَدُ بْنُ عِيسَى الْمِصْرِيُّ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، عَنْ يَحْيَى بْنِ أَيُّوبَ، عَنْ سَهْلِ بْنِ مُعَاذِ بْنِ أَنَسٍ، عَنْ أَبِيهِ، أَنَّ النَّبِيَّ ـ ﷺ ـ قَالَ " مَنْ عَلَّمَ عِلْمًا فَلَهُ أَجْرُ مَنْ عَمِلَ بِهِ لاَ يَنْقُصُ مِنْ أَجْرِ الْعَامِلِ " .
Classification
Hasan (Good) [Darussalam]
References
Sunan Ibn Majah 240
Sunan Ibn Majah Vol. 1, Book of Purification and its Sunnah, Hadith 240