That is to say that to the degree that you remember Allah, your heart will be calm and cheerful. His remembrance carries with it the meaning of total dependence upon Him, of turning to Him for aid, of having good thoughts about Him, and of waiting for victory from Him. Truly, He is near when supplicated: He hears when He is called and He answers when He is invoked, so humble yourself before Him and ask of Him sincerely. Repeat His beautiful blessed name, and mention Him as being alone worthy of worship. Mention His praises, supplicate to Him, and ask forgiveness from Him: you will then find - by the will of Allah- happiness, peace, and illumination. [1]
How can we remember Allah so that our hearts are at rest, peaceful and comforted? Herein under are some tips:
Yusuf Ali Explanation:
The Sign or Miracle is not something external: it is something internal, something in your mind, heart, and soul. It depends on your inner spiritual experience. If you turn to Allah, that light, that experience, will come. If you do not, Allah will not force you.
Javed Ahmad Ghamidi Explanation:
Ie., not through marvels and miracles, but through the Qur’ān when it fully expounds the attributes of God, His established practices and the arguments of His comprehension. However, for this it is necessary that a person is prepared to recognize the truth per se.
Tafsir Qur'an Wiki:
This is followed by an image of believing hearts which enjoy a congenial atmosphere of reassurance, happiness and peace. They find comfort in their feeling that their bond with God is a real one, and that they are close to Him, secure with His support.
They are without worry, and worry is normally only generated when one is left alone or when one is unsure of one’s way. Such people understand God’s wisdom behind man’s creation, origin and destiny. They also find comfort in feeling secure against aggression, harm or evil, except as God wills for them. This is coupled with a resigned acceptance of whatever trial God wishes to test them with. They are reassured that God will always bestow on them His grace, giving them guidance, abundance and security in this life and in the life to come.
Such comfort in the heart is a profound reality in the hearts of believers who deeply and truly feel the meaning of faith. They have a bond with God which they recognize. They cannot express the meaning of such a bond in words.
It touches their hearts, generating a feeling of happiness and reassurance that they do not stand alone in this universe. Whatever surrounds them is a friend, because it is all made by God under whose protection they live.
No one on earth is more miserable than those who are deprived of the blessing of a close relationship with God. Those who, having severed the most essential bond with their Creator, feel that they have no relationship with all around them are bound to suffer great misery. Who can be more wretched than one who does not realize why he has been created, or where he is heading, or why he suffers? Forlorn indeed is the one who goes about his life feeling isolated in an endless desert, having to strive without support, guidance or help.
In life we often experience moments which none can withstand unless we are certain of God’s support and protection, regardless of whatever resources of fortitude, perseverance and power may be at our command. There are moments in life that render all that useless. But such moments can be faced easily by those who find their comfort in God.
Now you may listen to the following short clipped video to explanation of the aforesaid Ayat by eminent Muslim scholar Nouman Ali Khan: