Natyashastra
सा मातृकेति विज्ञेया तद्भेदात्करणानि तु । अष्टोत्तरशतं ह्येतत्करणानां मयोदितम् ॥ १७३॥
These are to be known as the Mātṛkās, and their variations are called Karaṇas. Thus, I have described the 108 Karaṇas.
english translation
sA mAtRketi vijJeyA tadbhedAtkaraNAni tu । aSTottarazataM hyetatkaraNAnAM mayoditam ॥ 173॥
hk transliteration by Sanscript