ἀπομαρτυρέω
From LSJ
Ὁ αὐτὸς ἔφησε τὸν μὲν ὕπνον ὀλιγοχρόνιον θάνατον, τὸν δὲ θάνατον πολυχρόνιον ὕπνον → Plato said that sleep was a short-lived death but death was a long-lived sleep
English (LSJ)
A testify, bear witness, ἀ. τισὶν ὅτι εἰσὶν πολῖται Milet. 3 No.313 (iii B.C.): c. acc. et inf., Plb.30.31.20; τι Plu.2.860c:— Pass., περὶ τούτων ἀπομεμαρτύρηται αὐτῷ ὅτι IG2.377.9.