Quotes by Ahmad Von Denffer, A Day with the Prophet

“Ibn Mas'ud said that Allah's Messenger said: Abusing a Muslim is sinful and fighting with his tantamount to Kufr. Bukhari Muslim”

“From Aus B. Shurahbil" He heard Allah Messenger say: "One who strives to strengthen an oppressor and knows he is an oppressor has already left Islam. Baihaqi”