Section 357 BNSS — Procedure where accused does not understand proceedings

The text

If the accused, though not a person of unsound mind, cannot be made to understand the proceedings, the Court may proceed with the inquiry or trial; and, in the case of a Court other than a High Court, if such proceedings result in a conviction, the proceedings shall be forwarded to the High Court with a report of the circumstances of the case, and the High Court shall pass thereon such order as it thinks fit.

Source: India Code (indiacode.gov.in). The Gazette of India is the authoritative text.