唯識二十論述記 2.319

2.319

羯陵迦者，此云和雅，如彼鳥名。陵字去聲呼也，舊云：摩登伽仙人之名。昔有一人語此仙曰：汝若有子，當為國師。摩登伽是旃陀羅種，既聞此語，求女於王。王甚訶責，汝非好種，何故求我為婚？仙既數求不得，女意欲適仙處，令母白王：彼雖惡種，猶是仙人，深為可重，我情欲適。王決不許，女盜往彼，為仙人妻，遂生一子。王既失女，處處尋求，求知仙處，遣旃荼羅縛仙及女，相著擲著恒河水中。仙語恒河神曰：汝莫令我沒，若我沒者，須臾之間，令水涸竭。河神於是割繩，放令仙還去。仙瞋作念，須臾雨石，王人皆死，國變山林，從本為名，名摩登伽也。此三舊國，今變成林。佛問波離：汝知何緣此林空寂？

As for "Kaliṅga", this is translated as "harmonious and graceful", like the name of that bird. The character líng is pronounced in the falling tone. An older [text] says: the name of the ascetic Mātaṅga. Formerly, someone said to this ascetic: "If you have a son, he will become the royal preceptor." Mātaṅga belonged to the caṇḍāla caste. Having heard this, he sought a girl from the king. The king rebuked him severely: "You are not of good caste; why do you seek marriage with me?" When the ascetic sought repeatedly without success, the daughter wished to go to the ascetic's place. She had her mother tell the king: "Though he is of low caste, he is still an ascetic and deeply worthy of respect; my heart wishes to marry him." The king firmly refused. The daughter went to him secretly and became the ascetic's wife, subsequently giving birth to a son. Having lost his daughter, the king searched everywhere. Finding the ascetic's place, he dispatched caṇḍālas to bind the ascetic and the daughter together and throw them into the Ganges. The ascetic said to the deity of the Ganges: "Do not submerge me; if I am submerged, in an instant I will cause the water to dry up completely." The river deity thereupon severed the ropes and let the ascetic go free. In anger, the ascetic formed an intention, and in an instant it rained stones; the king and his people all died, and the kingdom turned into a mountain forest, named Mātanga after its origin. These three ancient kingdoms have now turned into forests. The Buddha asked Upāli: "Do you know for what reason these forests became empty and desolate?"