Bonding Knife
From Warhammer 40k - Lexicanum
The Bonding Knife is a ceremonial knife that serves as part of the Tau ritual of the Ta'lissera, in which a group is bonded together through ritualistic cutting of their flesh.[1b]
Overview
Following their ritual bonding the knife is then carried into battle by the team leader, although it is not designed for use in actual combat, and serves as a reminder of the sacred bond the group shares. Fire Warriors who serve as part of a Battlesuit team may also undergo the process, although instead of carrying the actual knife into battle the team leader may instead paint a knife design onto his armour.[1a]
