A Dream-Sender. Make a hollow hippopotamus out of red wax. Into this hippopotamus’* belly, place gold, silver and the ‘Ballatha’ of the Jews. Dress it in clean linen and set it on a clean windowsill. Then, take a piece of hieratic papyrus and with myrrh-ink and the blood of a baboon write on it what you want to send. Roll it up into a wick and use it to light a new, clean lamp. Put the foot of the hippopotamus onto the lamp, say the name, and it sends the dream.

ὀνειροπομπόν· ποίησον ἱπποπόταμον ἐκ κηροῦ πυρροῦ κοῖλον καὶ ἔνθες εἰς τὴν κοιλίαν αὐτοῦ τοῦ βιεβετνεησι καὶ χρυσὸν καὶ ἄργυρον καὶ τὸ καλούμενον βαλλαθὰ τὸ τῶν Ἰουδαίων καὶ στόλισον αὐτὸν λίνῳ καθαρῷ καὶ θὲς ἐπὶ θυρίδος καθαρᾶς καὶ λαβὼν χάρτην ἱερατικὸν γράψον εἰς αὐτὸν ζμυρνομέλανι καὶ αἵματι κυνοκεφάλου, ἃ βούλει πέμψαι, καὶ εἰλήσας εἰς ἐνλύχνιον καὶ ἐνλυχνιάσας λύχνον καθαρὸν καινὸν ἐπίθες ἐπὶ τὸν λύχνον τὸν πόδα ἱπποποταμίου καὶ λέγε τὸ ὄνομα, καὶ πέμπει.

PGM XIII, col. vii 47 - viii 7 (lines 312-319)

*alternatively, going with what comes next, ‘from the metals of the miners’, following a note in the scanned copy at Heidelberg. See right: βιεβεσνεητι “Metall des Erzarbeiter”, but I cannot make out the reference.