This hadith has been transmitted on the authority of A'mash and in the hadith transmitted on the authority of 'Isa the words are: Make it a source of reward, and in the hadith transmitted on the authority of Abu Huraira (the words are):" Make it a source of mercy".
This hadith also teaches us about the importance of having good intentions when performing any action as this will determine whether it will be rewarded or not. We should always strive to do what is right and avoid doing anything wrong as this could lead us astray from the path of righteousness. Furthermore, we should always remember that Allah knows best and He will judge our actions accordingly on the Day of Judgment.