Natyashastra
लघ्वष्टके पातविधिर्यथापूर्वं प्रकीर्तितः । वस्तुत्रयेऽपि द्विकले एवं पातान्प्रयोजयेत् शीर्षकं चैव कर्तव्यं षट्कलं पञ्चपाणिना ॥ २२५॥
The rule of Pāta in case of eight light ॥ syllables॥ has been mentioned before. In three Vastus of two Kalās too, these Pātas should be applied. And the Śīrṣaka of six Kalās should be made with Pañacapāṇiḥ.
english translation
laghvaSTake pAtavidhiryathApUrvaM prakIrtitaH । vastutraye'pi dvikale evaM pAtAnprayojayet zIrSakaM caiva kartavyaM SaTkalaM paJcapANinA ॥ 225॥
hk transliteration by Sanscript