BT Ber 55b(36) :נינקוט זקפא דימיניה בשמאליה ודשמאליה בימיניה‏ : let him hold his straight right arm in his left (sleeve) and that of the left arm in his right (sleeve)
See the entire entry for zqep̄, ziqpā n.m. erection, hanger, stake