mulctatio
From LSJ
ἆρον τὸν κράβαττόν σου καὶ περιπάτει → take up thy bed and walk, take up your bed and walk, pick up your mat and walk
mulctatio mulctationis N F :: imposition of fine
mulctātĭō, mieux multātĭō, ōnis, f., amende : Cic. Rab. perd. 16 ; Plin. 18, 11.