Natyashastra
लघ्वक्षरैककलिकैः पातैः सम्यक्प्रयोजयेत् । यथाक्षरं वधेष्वेतद्विज्ञेयं चापरान्तकम् ॥ २३७॥
The light syllables should be properly applied with single-Kalā Pātas, according to each syllable, and this is to be understood for the Aparāntaka.
english translation
laghvakSaraikakalikaiH pAtaiH samyakprayojayet । yathAkSaraM vadheSvetadvijJeyaM cAparAntakam ॥ 237॥
hk transliteration by Sanscript