Natyashastra
दशैकादश चैवैते सङ्कीर्णाः समुदाहृताः । न ह्येषामुपयोगोऽस्ति सप्तरूपे ध्रुवासु च ॥ २५॥
Those Tālas which have ten or eleven Kalās are called Saṅkīrṇa (irregular). These, however, are not used in the seven types of Dhruvās (song forms).
english translation
dazaikAdaza caivaite saGkIrNAH samudAhRtAH । na hyeSAmupayogo'sti saptarUpe dhruvAsu ca ॥ 25॥
hk transliteration by Sanscript