Naraku takes control of Miroku and splashes him with the jug's contents. Miroku starts to grow at a slow rate and suddenly stops merely half the size of Inuyasha. Apparently Miroku's spiritual power slightly negated Naraku's demonic spell and weakened the potency of the water.

Naraku was running out of options...although he might not need to interfere for them to destroy each other at this rate...