Natyashastra
मध्यमे च लताबन्धो ज्येष्ठे चैवाथ भेद्यकः । पिण्डीनां विविधा योनिर्यन्त्रं भद्रासनं तथा ॥ २९०॥
In the middle, the Latābandha is used, while the Bhedyaka is applied in the longest Āsārita. The Piṇḍīs have diverse origins: Yantra and Bhadrāsana.
english translation
madhyame ca latAbandho jyeSThe caivAtha bhedyakaH । piNDInAM vividhA yoniryantraM bhadrAsanaM tathA ॥ 290॥
hk transliteration by Sanscript