Natyashastra
एवमेतत् स्वरगतं विज्ञेयंगानयोक्तृभिः । अतः परं प्रवक्ष्यामि धनातोद्यविकल्पनम् ॥ १२ ॥
Thus, this understanding of the notes is to be known by those who play the flute. Next, I shall explain the selection of materials for the construction of musical instruments.
english translation
evametat svaragataM vijJeyaMgAnayoktRbhiH । ataH paraM pravakSyAmi dhanAtodyavikalpanam ॥ 12 ॥
hk transliteration by Sanscript