Musannaf Ibn Abi Shaybah 29568 — The sanctity of a believer's blood

Al-Sha'bi said that Sayyiduna Ibn Abbas (may Allah be pleased with them both) looked towards the Ka'bah and said: Your honor and sanctity are very great and your right is very great, and certainly a Muslim is greater than you in sanctity and honor. Allah, the Lord of Honor, has made his wealth inviolable, has made his blood inviolable, has made his honor and harming him unlawful, and that ill should be thought of him.