The Relevance Of The Crescent

The Crescent and Star have no resemblance or significance and as such are not sacred symbols of Islam.

The Companions RA asked the Prophet SAW about the reality of the Hilaal (crescent) -

Allah Ta'ala revealed the verse:

"Say, the Hilaal is a means of calculating time for people."

It is perhaps for this (and maybe other reasons) that the crescent took some distinctive role in the character of symbolising identification for Muslims.

However, it is essential that a Muslim understand that the crescent and the star has no religious significance in Islam and is not sacred in any sense.