The six characteristics of seeds: （1） Momentariness 剎那灭. Seeds pass out of existence each instant， and produce corresponding new seeds which endure for one instant and then pass out of existence， producing corresponding new seeds， and so on. Seeds must be momentary because that which is eternal is incapable of producing. （2） 果俱有 Seeds must be simultaneous with their manifestations. （3） 恒随转 Seeds must function in tandem with their appropriate consciousness. （4） 性决定 Seeds must have the same moral nature as their manifestations. （5） 待众缘 Seeds can produce their manifestations only after the necessary associated causes are present. （6） 引自果 Each seed must produce its own peculiar manifestation and no other. These are defined in the Commentary to the Summary of the Great Vehicle. ［摄大乘论释 T 1597.31.329b28-c10］