त्र्यङ्गविच्छेदकं विन्द्याद्युक्तं प्रक्रीडितादिभिः । अनिष्ठुरश्लक्ष्णपदं गान्धारीजातिमाश्रितम् ॥ ३१६॥
It should be composed of three parts (tryaṅga-vicchedaka), accompanied by playful movements and the like. Its words should be neither harsh nor too smooth, and it should be based on the Gāndhārī musical mode (jāti).
english translation