Su, Sū., 7, 19.1 tatra atisthūlam asāram atidīrgham atihrasvam agrāhi viṣamagrāhi vakraṃ śithilam atyunnataṃ mṛdukīlaṃ mṛdumukhaṃ mṛdupāśamiti dvādaśa yantradoṣāḥ //