Natyashastra
द्वितीयेऽप्येवमेव स्यात्सन्निपातस्ततः परम् । गुर्वक्षराणां विश्लेषादेवमेव तु मध्यमम् ॥ ६३॥
In the second also it should be the same, followed thereafter by a sannipāta. By the separation of long syllables, in the same way occurs the madhyama.
english translation
dvitIye'pyevameva syAtsannipAtastataH param । gurvakSarANAM vizleSAdevameva tu madhyamam ॥ 63॥
hk transliteration by Sanscript