Mukhtasar Bukhari (Abridged) 1272 — Taking pledge in battle not

Abdullah bin Zaid (may Allah be pleased with him) says: When the incident of Harrah occurred, a person came to him and said, "The son of Hanzalah is taking allegiance from people on the condition of death." So Abdullah bin Zaid (may Allah be pleased with him) said, "After the Messenger of Allah (peace and blessings of Allah be upon him), we will not pledge allegiance to anyone on this condition (i.e., on the condition of death)."