βάλῃσθα

From LSJ

οὗτος ἐγὼ ταχυτᾶτι· χεῖρες δὲ καὶ ἦτορ ἴσο → this is my speed: my hands and heart are its equal, such am I for speed; my hands and heart are just as good

Source

French (Bailly abrégé)

2ᵉ sg. épq. sbj. ao.2 de βάλλω.

Russian (Dvoretsky)

βάλῃσθα: эп. 2 л. sing. aor. conjct. к βάλλω.