[24].Surah An-Nur [The Light]: Ayat 42

৪২. নভোমন্ডল ও ভূমন্ডলের সার্বভৌমত্ব আল্লাহরই এবং তাঁরই দিকে প্রত্যাবর্তন করতে হবে।

Ayat 42. And to Allah belongs the sovereignty of the heavens and the earth, and to Allah is the return (of all). 

[Tafseer] of ayat 42. Yea, to Allah belongs the dominion of the heavens and the earth; and to Allah is the final goal (of all). From Him we are; to Him we belong; and to Him we shall return. Not only we, but all Creation, proclaims this in the whole world.

Hazrat Abu Hurairah (May Allah be pleased with him) reported: The Messenger of Allah [SAWW](PBUH) used to observe Itikaf every year (during Ramadan) for ten days; in the year in which he passed away, he observed Itikaf for twenty days.

[Al-Bukhari Book 03, Chapter 33, Hadith # 260]. 

Lesson : as mentioned above in Surah An-Nur Ayat 42. and to Allah is the return (of all). " Our beloved Prophet [SAWW](PBUH) were preparing himself for meeting with Allah (SWT) and We learn from these Ahadith that the observance of Itikaf in the last ten days of Ramadan is Sunnah of the Prophet [SAWW](PBUH). But it can be done only in mosque not at home. Itikaf helps to enhance one's spiritual growth and to strive hard to worship Allah better as there is nothing to distract one's attention from this noble pursuit.