References

RKDh, 1, 1, 54.1
  etadvidyādharaṃ yantraṃ hiṅgulākṛṣṭihetave /Context
RKDh, 1, 1, 246.2
  tathāmlavetasaṃ tāpyaṃ hiṃgulaṃ samabhāgikam //Context