It was narrated that Qays ibn Abi Haazim said: I saw Khaalid ibn al-Waleed (may Allah be pleased with him) in Heerah. Some poison was brought to him and he said: What is this? They said: Poison that kills in a very short time. He said: Bismillah (in the name of Allah), then he swallowed it and nothing bad happened to him. Sharh Usool I‘tiqaad Ahl as-Sunnah wa’l-Jamaa‘ah, 6/498; al-Bidaayah wa’n-Nihaayah, 6/382