Answer: During that night, Muhammad began to receive the revelation according to the Muslim belief.
Explanation:
During that night, Muhammad began to receive the first fragments of the revelation woven into the holy book of Muslims, the Quran. It happened in Ramadan (September), so that month is of great importance for Muslims. Muhammad, as Muslims believe, began to receive revelation while sleeping in a cave called Hira. After that, he began to propagate Islam.
They use it as a defense because if they are being hunted by a predator, they will use a certain light pattern to alert any larger predators to get whatever is hunting them.
