To this the following words of God refer...

To this the following words of God refer: "Each of them have angels, mutually succeeding each other, before him and behind him; they watch him by the command of God" [Qur'an 13.12].

As these outside causes take this course according to a well-defined order and arrangement, and never go astray from the path which their Creator has appointed for them, and our own intentions can neither be compelled, nor ever found, on the whole, but by their fitness, so it is necessary that actions too should also be within well-defined limits, that is,