Complex sentence: Jayasimha's nominee and adopted son Chahada (also called Bahada or Charubhatta) formed an alliance with Arnoraja, and instigated him to fight Kumarapala, as attested by several sources, including "Dvyashraya" ("Kumarapala Charita "), and"Prabandha Chintamani".
Split into simpler sentences: Jayasimha's nominee and adopted son Chahada (also called Bahada or Charubhatta) formed an alliance with Arnoraja, and instigated him to fight Kumarapala. This is attested by several sources, including "Dvyashraya" ("Kumarapala Charita "), and"Prabandha Chintamani".