Kokoro, by Natsume Soseki (paragraph #1176)

「無論口の見付かる迄で好いですから」とも云つた。

translation

He also said, "Of course it's fine until I find a way out."

kanji (pronunciations & definitions)
無論: of course (むろん), certainly, naturally : mouth (くち), opening, hole, gap, orifice 見付: approach (to a castle gate) (みつけ), front of a structural member : until (a time) (まで), till, to, up to, to (a place or person)

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