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   Vol.,  Sect., Part, Chap., Par.                                  grey = Comment text

 1        I, Intro,    0,   0,   6|       upa-ni-shad from the root sad, to sit down, preceded by
 2        I, Intro,    0,   0,   6|         deriving upanishad from sad, to sit down. They derive
 3        I, Intro,    0,   0,   6|         it either from the root sad, in the sense of destruction,
 4        I, Intro,    0,   0,   6| revelation[2], or from the root sad, in the sense of approaching,
 5        I, Intro,    0,   0,   6|        teacher.~With upa alone, sad occurs as early as the hymns
 6        I, Intro,    0,   0,   6|        almost synonymously with sad, viz. âs and vis. We find
 7        I, Intro,    0,   0,   6|    brahmaivântata upanisrayati.~Sad, with upa and ni, occurs
 8       XV, Intro                |       son's question, replies: 'Sad eva, Somya, idam agra âsîd
 9       XV, Intro                |     srishter ekam evâdvitâyakam~Sad evâsîn nâmarûpe nâstâm ity
10       XV, Intro                |         idam buddhikâle 'pi tat sad aikshata.]~was the existent (
11       XV,   7                  |    parastân na[14] san nâsan na sad ityetan nirvânam anusâsanam