Luke 6:1
One Sabbath Jesus was going through the grainfields, and his disciples began to pick some heads of grain, rubbing them in their hands and eating the kernels — the grainfield Sabbath controversy opens chapter 6's sequence of controversies and teachings. Rubbing the heads of grain in their hands is Luke's detail: the rubbing separates the grain from the husk — the action that could be categorized as threshing, one of the Sabbath's prohibited labors.