κατάσχεσις
From LSJ
τὸν ἴδιον κίνδυνον ὑποθείς → at his own risk
English (LSJ)
εως, ἡ,
A holding back, restraining, retention, πνεύματος Hp.Vict.2.64. II possession, LXX Le.25.25, Za.11.14, al., Act.Ap.7.5. III relation, attitude, κ. φιλικὴ πρὸς τῶν πέλας Stoic.3.24.