10. The Non-Substance (Adravya) After the treatment thus given to (the Category) Substance (Dravya), that of non-substance will now be taken up. Non-substance is divisible into ten clasps only viz.: - 1-3 (qualities inherent in matter) (1) Sattva (pure), (2) Rājas (motive) and (3) Tamas (dark) (4, 5, 6,7, 8) : (4) Sound, (5) Touch, (6) Colour, (7) Taste, (8)