 you do not have to guide them. god guides whomever he wants. whatever you spend for the cause of god is for your own good provided you do not spend anything but to please god. for anything good that you may give for the cause of god you will receive sufficient reward and no injustice will be done to you.
ليس عليك هداهم ولكن الله يهدي من يشاء وما تنفقوا من خير فلأنفسكم وما تنفقون إلا ابتغاء وجه الله وما تنفقوا من خير يوف إليكم وأنتم لا تظلمون