τοὐρανοῦ
From LSJ
κοινὴ γὰρ ἡ τύχη καὶ τὸ μέλλον ἀόρατον → fortune is common to all, the future is unknown | fortune is common to all and the future unknown | fate is common to all and the future unknown
Greek (Liddell-Scott)
τοὐρανοῦ: κατ’ Ἀττικ. κρᾶσιν ἀντὶ τοῦ οὐρανοῦ, Ἀριστοφ. Εἰρ. 199.
Greek Monotonic
τοὐρανοῦ: κράση αντί τοῦ οὐρανοῦ.
Russian (Dvoretsky)
τοὐρανοῦ: in crasi = τοῦ οὐρανοῦ.