Natyashastra
यत्तु बाक्करणोपेतं सर्वातोद्यानुरञ्जकम् । अतालेन निबद्धं च पदतालं प्रकीर्तितम् ॥ ३०॥
That which is accompanied by instrumental techniques (karaṇas), delights all kinds of musical instruments, and is not bound to a time-measure (a-tāla), is called Pada-tāla.
english translation
yattu bAkkaraNopetaM sarvAtodyAnuraJjakam । atAlena nibaddhaM ca padatAlaM prakIrtitam ॥ 30॥
hk transliteration by Sanscript