In fact, Professor Reichenbachstates on p. 146 of that article "
`Sankara  argues  that  the original karmic  actions
    themselves  cannot bring about the proper results at
        some  future   time;   neither   can  supersensuous,
        nonintelligent  qualities  like apuurva or ad.r.s.ta
        by  themselves   mediate   the  appropriate,  justly
        deserved  pleasure and pain.  The fruits, then, must
        be administered  through  the action  of a conscious
        agent,  namely,  God  (Isvara).(13)