References

RRÅ, R.kh., 7, 5.2
  evaṃ dvādaśadhā pācyaṃ śuddhaṃ yogeṣu yojayet //Context
RRÅ, R.kh., 8, 2.2
  ete dvādaśadhā śodhyā māryā drāvyāḥ puṭādiṣu //Context