Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 7 months ago

Yes he and his group and many companions knew that the Prophet Muhammad (SAWA) had ordered Imam Ali (AS) not to fight against those who will deviate from his orders and grab his right. That is why Umar and his group did what they did against Ahlul Bayt (AS).