Allah, may He be glorified and exalted, mentioned that in the Holy Qur'aan, where He says (interpretation of the meaning): “By those (angels) who pull out (the souls of the disbelievers and the wicked) with great violence. 2. By those (angels) who gently take out (the souls of the believers). 3. And by those that swim along (i.e. angels or planets in their orbits)” [al-Naazi’aat 79:1-3].