Hindu discipline (4)
I believe the answer is:
yoga
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hindu discipline</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for yoga that I've seen before include "System of exercises for bodily or mental control" , "Spiritual exercise discipline" , "Hindu system for health and relaxation" , "Hindu course of exercises and postures" , "Hindu-derived exercises" .)