An essential article of Muslim's faith is belief in the angles of Allah.
We can know about the angels and some of their attributes from the Glorious Qur'an and the Prophet Muhammad's traditions as these traditions are reliable, infallible authorities on the articles of faith in general, and those relating to the unseen in particular. For, as it has been proven in the present age of scientific discoveries, many unseen facts of science which were unknown in the past are now well established truths after man has acquired some means and instruments that enable him to learn about facts of the universe; but all that man so far knows is no more than a drop of water compared to the oceans of the unknown.
So as, in every science or field of knowledge, we turn to those specialized or to well-informed authorities, here too, we refer to the Prophet in matters religion as he has conveyed to humankind the revelation and instructions of Allah, the Creator of everything and the best to know, with no limits to His knowledge and power as He is the Absolute, Almighty, All-Knowing and All-Seeing Creator.
According to HADITH, i.e., sayings of the Prophet (May peace and blessings of Allah be upon him), Angels were originally created from light, as Adam was originally created from clay. They are purely spiritual creatures who never eat, drink, or sleep; their major activity is to serve Allah, obey His orders and glorify Him all the time. They are numerous and each of them is charged with a certain task. Gabriel, for example, conveyed the revelation of Allah unto Prophets. Some of them observe man's deeds and preserve a comprehensive record of them. On the Day of Judgment they will bring forth a full report on man's good or bad deeds for which he will be rewarded or punished. There are other duties of angels indicated in the Qur'an.
The creation of those extraordinary creatures testifies to the infinite inimitable power of Allah. They also stand as a good example of highly righteous and industrious servants of Allah to be imitated by man. At last, belief in the angels of Allah would enlarge man's horizons of knowledge and make him never feel lonely in the vast universe as he learns that it abounds with kind and friendly spirits that come down unto good believers with composure and comfort.
The close of our words will be:� Praise be to Allah, The Cherisher and Sustainer of the Worlds.�