mortar and pestle

# Iya odo on ommo re ko ni ija, agbe li o dija sille fun won : ommo odo ki ina iya re lassan.
The pestle and the mortar had no quarrel between them, it was the farmer that caused the quarrel (by supplying the yam for pounding) : the child of the mortar (i.e., the pestle) does not beat its mother for nothing.