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Ποιητὴς, ὁπόταν ἐν τῷ τρίποδι τῆς Μούσης καθίζηται, τότε οὐκ ἔμφρων ἐστίν → Whenever a poet is seated on the Muses' tripod, he is not in his senses
Use P. and V. πηγνύναι.
verb intransitive P. and V. πήγνυσθαι, πεπηγέναι (2nd perf.).