James D. Mauseth (2014). Botany. Jones & Bartlett Publishers. p. 223. ISBN978-1-4496-4884-8. Perhaps the simplest of fruits are those of grasses (all cereals such as corn and wheat)...These fruits are caryopses.
Quran 7:19 ˹Allah said,˺ "O Adam! Live with your wife in Paradise and eat from wherever you please, but do not approach this tree, or else you will be wrongdoers."