References

RRÅ, R.kh., 9, 51.1
  siddhayogamidaṃ khyātaṃ siddhānāṃ sammukhāgatam /Context
RRÅ, V.kh., 19, 140.1
  ādau sarvadiśāntareṣu gamanaṃ kṛtvā guroḥ saṃmukhāt prāptaṃ bhaktibalena yuktividhinā sārātisāraṃ mahat /Context