It is not required of thee (O Messenger), to set them on the right path, but Allah sets on the right path whom He pleaseth. Whatever of good ye give benefits your own souls, and ye shall only do so seeking the "Face" of Allah. Whatever good ye give, shall be rendered back to you, and ye shall not Be dealt with unjustly.
Not upon you, [O Muhammad], is [responsibility for] their guidance, but Allah guides whom He wills. And whatever good you [believers] spend is for yourselves, and you do not spend except seeking the countenance of Allah. And whatever you spend of good - it will be fully repaid to you, and you will not be wronged.