LXX Gen 42:27

λύσας δὲ εἷς τὸν μάρσιππον αὐτοῦ, δοῦναι χορτάσματα τοῖς ὄνοις αὐτοῦ οὗ κατέλυσαν, ἴδεν τὸν δεσμὸν τοῦ ἀργυρίου αὐτοῦ, καὶ ἦν ἐπάνω τοῦ στόματος τοῦ μαρσίππου.

At the place where they lodged for the night, one of them opened his sack to get feed for his donkey, and he saw his silver in the mouth of the sack.