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I looked for such an account in the recent Synaxarion compiled by the Monastery of Simonos Petra on Mt. Athos, as well as an English translation of Dmitri of Rostov's 17th century Great Collection of The Lives of the Saints and I can't find anything like this account. Both of these works are multi-volume collections and extremely detailed. Dmitri of Rostov's account of St. Thomas' Life is 14 pages long, but doesn't have anything similar I could find.
The most famous account of St. Thomas in India seems to be how he collected money from a great King to build him a mansion, but kept giving the money to the poor. When the King found out what he had done, he was furious and had Thomas imprisoned. The King's brother died suddenly, though, and was vouchsafe a vision of heaven, where he saw an enormous golden mansion being built for his brother by virtue of Thomas' good deeds to the poor. He came back to life and both he and his brother became Christians as a result.
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This so-called water miracle is an imaginary story to appropriate Brahmin status to a family belonging to a non-Brahmin, local caste. It's historically inaccurate because there were no Namboodiri Brahmins in Kerala in the 1st century C.E. Brahmins came in the 8th century and it's evidenced by the introduction of Sanskrit language after their arrival. Before the arrival of Namboodiris, proto-Tamil was the language of the land. Another glaring twist in history is the fake claim there were Jews in Kerala. Solomon's ships came to India and other Eastern countries for trade and not to plant Jewish colonies. Solomon didn't establish Jewish colonies even in the Middle Eastern countries. According to historical records, Jews came to Kerala only in 1000 C.E. under the leadership of Joseph Rabban during the regime of Bhaskara Ravivarman.