As Visnu was to incarnate as a man in order to kill Ravana, Brahma had already produced Jambavan. Even though Vali was not a help to Rama directly, the incident of his birth is described along with Rama’s because he was still a prop to Rama through his son Angada. The scripture states ‘atma vai putra namasi (you are my own self, being my son). In the Yuddhakanda Sardula says to Ravana that Susena, virtuous and valiant, is the son of Dharma. This is incorrect.
Birth of Jambavan, Vali and others 1.17.9-17
As Visnu was to incarnate as a man in order to kill Ravana, Brahma had already produced Jambavan. Even though Vali was not a help to Rama directly, the incident of his birth is described along with Rama’s because he was still a prop to Rama through his son Angada. The scripture states ‘atma vai putra namasi (you are my own self, being my son). In the Yuddhakanda Sardula says to Ravana that Susena, virtuous and valiant, is the son of Dharma. This is incorrect.