Terros went to the cupboard and took a clay jar filled with black-colored caplets inside. He took three caplets and dropped them inside Graven's mouth. The tablets are meant to counter deadly poison, it's one of his best creations, it might be effective or not, only time can tell.
He doesn't know what the effect will be... but he's taking a gamble here while it's still early. He went back to the cupboard and took another bottle containing another caplet-like object, this time its color brown. He went back to bed and drop one on Graven's mouth.
Done, he stayed inside the room for a few minutes and left.
Graven woke up three hours later and roamed his eyes around the unfamiliar room, he finally realized that he was still inside the bamboo house.
He glanced at the open window, it's already dark outside, he must have overslept due to drunkenness.