It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "What is heard is not like what is seen. That is why, when Allah Almighty informed Prophet Musa (peace be upon him) that his people had started worshipping the calf, he did not throw down the tablets. But when he saw his people doing so with his own eyes, he threw down the tablets of the Torah and they broke."