One of the most popular religious destinations in the world is the Ayyappa temple in Sabarimala; it gets far more visitors per year than Tirupati and the Vatican combined! The story of the temple begins with the birth of Dharma Shasta, the son of Shiva who was born during Shiva's encounter with Mohini, as described in this chapter of the Upasamhara Pada of the Brahmanda Purana.
But contrary to popular belief, Ayyappa is not the exactly same as the god Dharma Shasta. Ayyappa refers to prince Manikandan of Pandalam, who was a human incarnation of the god Dharma Shasta. Ayyappa performed many great deeds in his time on Earth, including obtaining tiger's milk and killing the demoness Mahishi, sister of the demon Mahishasura whom Durga killed. In any case, Ayyappa lived relatively recently; In fact a close friend and devotee of his was a Muslim named Vavar.
My question is, what scriptures mention Ayyappa? Like I said, the Brahmanda Purana describes the birth of Shiva's son Dharma Shasta, but I'm interested in references to prince Manikandan of Pandalam. Now given that his time period was after Muslims had already come to India, he obviously wouldn't be described in Hindu scripture in the past tense. But Hindu scripture often contains prophecies of future incarnations, so are there any scriptures that foretell the birth of an incarnation of Dharma Shasta in the Kali Yuga?
As I discuss in this question, the Sthala Purana or temple scripture of Tirupati gives quotes from various Puranas which describe the story of Venkateshwara, so it's possible that the Sthala Purana of the Sabarimala temple might contain quotes from Puranas prophesying the birth of Ayyappa. Does anyone have a copy of the Sabarimala Sthala Purana, preferably in English?