It is the sense of responsibility and willingly undertaking it...

It is the sense of responsibility and willingly undertaking it, affected by his conscious connection with Allah, the Exalted. The person who believes in Allah feels he is being watched by Him and fears Him. So, he acts knowing that Allah is with him, watches him, and nothing is concealed from Him, whether in the heavens or in the earth: "And those who disbelieve say: The hour shall not come upon us. Say: Yea!

My Lord, the Knower of the unseen, it shall certainly come upon you; not the wig/it of an atom becomes absent from Him, in the heavens or at the earth, and neither less than that nor greater, but (all) is at a clear book." Holy Qur'an (3.4:3) "He knows the stealthy looks and that which the breasts conceal." Holy Qur'an (40:19) This awareness and the true faith is sufficient to urge man to perform his duty and to undertake his human responsibility in every phase of life, legal; devotional or ethical.

The Qur'an rears up this spirit of responsibility in its followers and believers, and stresses its cultivation and development through many texts and concepts: "...

these are the limits of Allah, (imposed by Allah) so do not exceed them, and whoever exceeds the limits of Allah these it is that are the wdust." Holy Qur'an (2:229) So, a believer is keen on respecting the limits imposed by Allah and observing His instructions, and adheres to the law which organizes his life and directs his activities, contrary to the unbeliever who, having no faith in Allah and no fear of His observation, seizes every opportunity to transgress the limits of law and order, to cast away all responsibilities, and tread upon them whenever he finds a chance for disobedience and rebellion.

This is because neither he accepts the sanctity of the law which organizes his life, nor does he believe in Divine punishment as long as be thinks he can slip away from the grasp of the authority and its just punishment.