Moses returned to his people and was upset and grieved. He said, "You have chosen a terrible thing after me. Do you wish your Lord's Law of Requital to smite you soon (20:86)? He placed the tablets of the Commands among them and questioned his brother, Aaron, very strictly. Aaron explained, "O Son of my mother! These people treated me harshly and took my patience as weakness, and almost killed me. Let not my opponents rejoice, and count me not among the wrongdoers." (Seizing the beard and head is indicative of interrogating harshly. Aaron had been extra patient with their idolatry to avoid division among them (20:94). Aaron, the Prophet of God, preferred SHIRK over Sectarianism. This is how reprehensible sectarianism and division in religion is).