But if they turn away (O Muhammad SAW from the Islamic Monotheism, which you have brought to them). We have not sent you (O Muhammad SAW) as a Hafiz (protector) over them (i.e. to take care of their deeds and to recompense them). Your duty is to convey (the Message). And verily, when We cause man to taste of Mercy from Us, he rejoices thereat, but when some ill befalls them because of the deeds which their hands have sent forth, then verily, man (becomes) ingrate!