πρόκα
From LSJ
Καὶ τῶν λεγόντων εὖ καλὸν τὸ μανθάνειν → It is a fine thing to learn from those who speak well
English (LSJ)
Ion. Adv.
A forthwith, straightway, Hp. ap. Gal.19.132, A.R. 1.688; in Hdt. πρόκα τε or πρόκατε, 1.111, 6.134, 8.65, 135; so also in Call. in PSI19.1092.52.