There was a time when Egypt was conquered by Muslims, Caliph Umar Al-Khattab put Amru Al-Ash as the governor of that new Muslim territory. Amru Al-Ash was famous as a valiant commander and an efficient and wise administrator.
After some period, the month of Bowana (June) came. At the beginning of the month a delegation of the “Qabti” tribe met the governor and said that one habit of the river Nile is such that if not fulfilled it (the Nile) stops flowing.
The governor asked. “What’s that?”.
They said: “After 12 nights of this month Bowana (June) has passed, we grab a beautiful young girl, persuade her parents, decorate this young girl with good clothes and jewelry and put her in the river Nile. After that the river flows with full force”