The Quran

وَهُوَ الَّذي يَتَوَفّاكُم بِاللَّيلِ وَيَعلَمُ ما جَرَحتُم بِالنَّهارِ ثُمَّ يَبعَثُكُم فيهِ لِيُقضىٰ أَجَلٌ مُسَمًّى ۖ ثُمَّ إِلَيهِ مَرجِعُكُم ثُمَّ يُنَبِّئُكُم بِما كُنتُم تَعمَلونَ

Muhammad Asad

And He it is who causes you to be [like] dead¹ at night, and knows what you work in daytime; and He brings you back to life each day² in order that a term set [by Him] be fulfilled. In the end, unto Him you must return: and then He will make you understand all that you were doing [in life].

For a full explanation of the verb tawaffa - lit., "he took [something] in full" - see note 44 on 39:42, which is the earliest instance of its use in the Qur'an.
Lit., "therein" - referring to the daytime. The polarity of sleep and wakefulness contains an allusion to life and death (cf. 78:9-11).