The second workshop of the Haṭha Yoga Project was held at a holiday cottage on the Isle of Wight in September 2017. The focus of the workshop was reading the section on āsana in a manuscript of the Yogacintāmaṇi held at the Scindia Oriental Research Institute, Ujjain, India. This manuscript contains descriptions of seventeen āsanas, as well as two long lists of āsanas, that are not found in other works. Mark Singleton and myself are preparing a critical edition of this passage, which is based on nearly a dozen manuscripts of the Yogacintāmaṇi, a manuscript of Godāvaramiśra’s Yogacintāmaṇi and many testimonia.
I presented our work on the Yogacintāmaṇi to Dr James Mallinson and two special guests: Dr Somdev Vasudeva, who in turn presented his critical edition of the chapter on āsana in the Jayadrathayāmala and Dr Csaba Kiss, who presented his critical edition of the chapter on āsana in the Matysendrasaṃhita.
The Ujjain manuscript of the Yogacintāmaṇi contains many interesting marginal notes in its section on āsana, one of which I have written about here [link – see below]. The Yogacintāmaṇi’s description of Kukkuṭāsana is the standard one found in the Vasiṣṭhasaṃhitā (1.78) and the Haṭhapradīpikā (1.25):
Having adopted Lotus posture, inserting the hands between the knees and thighs and placing them on the ground, the cock pose (kukkuṭāsana) is positioned in the air.
Above this description, the Ujjain manuscript has the following note in its upper margin:
Kukkuṭāsana is effective for cleansing the channels (nāḍī).
The unknown author of this note, who must lived in the second half of the seventeenth century, believed that the practice of Kukkuṭāsana could cleanse the nāḍīs, which are the channels in body that convey vitality (prāṇa). Some texts, such as the Vasiṣṭhasaṃhitā (2.55-69, also see Haṭhapradīpikā 2.4-5), consider clean nāḍīs to be a requisite for prāṇāyāma while others, such as the Dattātreyayogaśāstra (67, also see Haṭhapradīpikā 2.78) consider it a result of prāṇāyāma.
It is not unheard of that an āsana can cleanse the nāḍīs. In fact, the Haṭhapradīpikā states that of the eighty-four seated āsanas (pīṭha), a yogin should always practise Siddhāsana because it removes impurities from the seventy-two thousand nāḍīs in the body.
A similar comment to the above marginal note on Kukkuṭāsana is found in Sundaradeva’s Haṭhasaṅketacandrikā, which suggests that the author of these marginal notes knew the Haṭhasaṅketacandrikā. If this was the case, it is new evidence for dating the Haṭhasaṅketacandrikā before 1659 CE. However, it could also be the case that this marginal note derives from a source text used by Sundaradeva, which is a possibility because the Haṭhasaṅketacandrikā is a compendium.
The Haṭhasaṅketacandrikā categorises two āsanas as being effective for cleansing the nāḍīs. These are Kukkuṭāsana and Dhanurāsana. The Haṭhapradīpikā (1.25 and 1.27) describes both of these āsanas but it does not mention that they cleanse the nāḍīs.
So, one might wonder whether Kukkuṭāsana’s effect of cleansing the nāḍīs was noticed sometime between the composition of the Haṭhapradīpikā (mid-fifteenth century) and the Haṭhasaṅketacandrikā (mid-seventeenth century).
Or is there something significant about the fact that Siddhāsana, one of the foremost āsanas in the Haṭhapradīpikā, was thought to cleanse the nāḍīs in the fifteenth century, whereas two non-seated poses are attributed with this effect in the seventeenth century? Might this point to the growing importance of non-seated postures and their health benefits after the Haṭhapradīpikā was composed? Or did Sundaradeva, who was a physician (vaidya) in Vārāṇasī, make a greater effort than previous authors to document the healing benefits of non-seated poses?
 Vasiṣṭhasaṃhitā 1.78 (padmāsanaṃ samāsthāya jānūrvor antare karau | bhūmau niveśya saṃsthāpya vyomasthaṃ kukkuṭāsanam). Cf. Haṭhapradīpikā 1.25 (padmāsanaṃ tu saṃsthāpya jānūrvor antare karau | niveśya bhūmau saṃsthāpya vyomasthaṃ kukkuṭāsanam). On the identity of kukkuṭa as the Red Junglefowl (gallus gallus), see K. N. Dave, Birds in Sanskrit Literature: With 107 Bird Illustrations, Motilal Banarsidass, 2005, pp. 138 and 489.
 YCM 60r (top margin): kukkuṭaṃ nāḍīśuddhyupayogi
 Haṭhapradīpikā 1.41 (caturaśītipīṭheṣu siddham eva sadābhyaset | dvāsaptatisahasrāṇāṃ nāḍīnāṃ malaśodhanam).
 The Haṭhasaṅketacandrikā post-dates the Yogacintāmaṇi (early 17th century), because the former cites the latter by name.
 Haṭhasaṅketacandrikā f. 28r; “Among the āsanas, two are effective for cleansing the channels” (athāsaneṣu nāḍīśuddhyupayogyāsanadvayam).
[link mentioned above: http://theluminescent.
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