en_tn_condensed/luk/06/01.md

Now it happened

This phrase is used here to mark the beginning of a new part of the story.

grainfields

These are large sections of land where people had scattered wheat seed to grow wheat.

heads of grain

These are the topmost parts of the grain plant, which is a kind of large grass. The heads hold the mature, edible seeds of the plant.

rubbing them between their hands

"rubbing the husks off with their hands." They were rubbing off the outer husks so they could eat the seeds.