References

RCūM, 12, 11.2
  snigdham avraṇakaṃ sthūlaṃ pravālaṃ saptadhā matam //Context
RRS, 4, 18.2
  snigdhamavraṇakaṃ sthūlaṃ pravālaṃ saptadhā śubham //Context