It is narrated from Hazrat Abu Hurairah (may Allah be pleased with him) that once, in the presence of the Noble Prophet (peace and blessings be upon him), some Abyssinians were displaying feats with spears. Hazrat Umar (may Allah be pleased with him) arrived and began to pick up pebbles to hit them, but the Noble Prophet (peace and blessings be upon him) said, "Umar, leave them."