Coranic explanation of the day and night by Maurice Bucaille:
The Qur’anic description of the sequence of day and night would, in itself, be
rather commonplace were it not for the fact that it is expressed in terms that are
today highly appropriate. The Qur’an uses the verb
kawwara in chapter az-Zumar
to describe the way the night ‘winds’ or ‘coils’ itself around the day and the day
around the night.
“He coils the night upon the day and the day upon the night.”
The original meaning of the verb
kis to coil a turban around the head. This is a
totally valid comparison; yet at the time the Qur’an was revealed, the
astronomical data necessary to make this comparison were unknown. It is not
until man landed on the moon and observed the earth spinning on its axis, that
the dark half of the globe appeared to wind itself around the light and the light
half appeared to wind itself around the dark.