[13].Surah Ar-Ra'd [The Thunder] : Ayat 12-13

Ayat 12. It is He who shows you the lightning, as a fear (for travellers) and as a hope (for those who wait for rain). And it is He Who brings up (or originates) the clouds, heavy (with water).

Ayat 13. And Ar-Ra'd (thunder) glorifies and praises Him, and so do the angels because of His Awe, He sends the thunderbolts, and therewith He strikes whom He wills, yet they (disbelievers) dispute about Allah. And He is Mighty in strength and Severe in punishment. 

Hazrat Abu Dharr (May Allah be pleased with him) reported: Messenger of Allah  [SAWW](PBUH) said, "I see what you do not see and I hear what you do not hear; heaven has squeaked, and it has right to do so. By Him, in Whose Hand my soul is, there is not a space of four fingers in which there is not an angel who is prostrating his forehead before Allah, the Exalted. By Allah, if you knew what I know, you would laugh little, weep much, and you would not enjoy women in beds, but would go out to the open space beseeching Allah". [At-Tirmidhi Hadith # 2312]. 

Lesson : as mentioned above in Surah Ar-Ra'd Ayat 13. "And Ar-Ra'd (thunder) glorifies and praises Him, and so do the angels because of His Awe, This Hadith also highlights the importance of fear of Allah because the more awareness a Muslim has of the Majesty and Magnificence of Allah, the greater shall be the terror in his heart for His punishment and hope of His Mercy. With this state of mind, he will perform greater acts of obedience and abstain more rigidly from sins. 2. The Hadith also mentions the heaven teeming with angels who are all the time prostrating before Allah in worship. When this is the condition of the angels, who do not slack for a moment in the obedience of Allah, how important it is for man to worship Him because he is all the time violating commands of Allah. It is, therefore, incumbent on man to obey Allah and always seek His Help and Refuge