Ὡς δ᾽ ὅτ᾽ ἐνὶ τρητοῖσιν ἐύρρινοι χοάνοισιν φῦσαι χαλκήων ὁτὲ μέν τ᾽ ἀναμαρμαίρουσιν, πῦρ ὀλοόν πιμπρᾶσαι, ὅτ᾽ αὖ λήγουσιν ἀυτμῆς, δεινὸς δ᾽ ἐξ αὐτοῦ … - Apollonius of Rhodes

θάμβησαν δὲ νέοι μέγα κῶας ἰδόντες
λαμπόμενον στεροπῇ ἴκελον Διός. ὦρτο δ᾽ ἕκαστος
ψαῦσαι ἐελδόμενος δέχθαι τ᾽ ἐνὶ χερσὶν ἑῇσιν.

Lord Jason held up the great fleece in his arms. The shimmering wool threw a fiery glow on his fair cheeks and forehead; and he rejoiced in it, glad as a girl who catches on her silken gown the lovely light of the full moon as it climbs the sky and looks into her attic room.

And now, from somewhere in the bowels of the earth, from the smoky stronghold where they slept, the pair of bulls appeared, breathing flames of fire. The Argonauts were terrified at the sight. But Jason planting his feet apart stood to receive them... He held his shield in front of him, and the two bulls, bellowing loudly, charged and butted it with their strong horns...