Surah 2. Al-Baqara, Ayah 57

 Manna (heavenly bread) and quails (chicken-like birds) sustained the children of Israel in the wilderness after they left Egypt.

Manna=Hebrew, Manhu: Arabic Mahuwa? - What is it? In Exod. xvi. 14 it is described as "a small round thing as small as the hoar frost on the ground." It usually rotted if left over till next day; it melted in the hot sun; the amount necessary for each man was about an Omer, a Hebrew measure of capacity equal to about 2| quarts. This is the Hebrew account, probably distorted by traditional exaggeration. The actual Manna found to this day in the Sinai region is a gummy saccharine secretion found on a species of Tamarisk. It is produced by the puncture of a species of insect like the cochineal, just as lac is produced by the puncture of the lac insect on certain trees in India. As to quails, large flights of them are driven by winds in the Eastern Mediterranean in certain seasons of the year, as was witnessed during the Great War of 1914-1918 by many Indian officers who campaigned between Egypt and Palestine.