Rin heard nothing intelligible , as if words had already fled far beyond his reach . He let out a slight grunt , then a louder one . His attention turned inward ; his eye dilated and his brow creased . Thrusting his hand further under his clothing , he seemed to search around in the area of his groin - surely he had n't lost track of that ?
According to the above context, answer the following question.
What was he looking for in his clothes ?


His wallet .