Two bows is a measure of distance.
It's a proverb - A person cannot mount two horses or bend two bows. (avoid excessiveness)
There's a dawn prayer of two bows.
It refers to a strengthening of a bond of friendship just like drawing two bows together both appearing almost one.
It's referred to in the end days of death & destruction when the mountains will be brought down, everything will become dust...when the sun is brought down to two bows length...
The Mongols relied on two bows fighting in Baghdad. They later added catapults and incendiary devices & introduced gunpowder, a technology that would alter the direction of Muslim & world politics.
There's an interesting example of arabs fighting with bows and arrows from the back of a camel on:
http://www.livius.org/a/1/egypt/arabian_archers.jpg
Sitting back to back...shooting in opposite directions. Two bows? One aircraft, two targets, maybe?
in the Islamic world :
Two bows is a measure of distance.
Very intriguing!