If you fear to embrace what you desire, then depart from here now, disturbance...
去り行く (sariyuku) = to part
the author replaces 行 with the homophone 逝, which carries the connotation of death...lest grave misfortune and a grim end find you here in this field.
仕舞う (shimau) = to finish, to end
author replaces 仕 with the homophone 死 (death).
