A pretending friend may send information to an outsider: "Grains, oil and jaggery and salt stored in the fort (of the enemy) have been exhausted; a fresh supply of them is expected to reach the fort at such and such a place and time; seize it by force." Then traitors, enemies, or wild tribes, or some other persons, specially appointed for the purpose, may send a supply of poisoned grains, oil, jaggery, and salt to the fort. This explains the seizure of all kinds of supply.