Question of fact – Question of Law – When a question of fact has reached finality inter se between the parties, it cannot be reopened in a   collateral proceeding.

Question of fact – question of law – When a question of fact has reached finality inter se between the parties, it cannot be reopened in a   collateral proceeding. However, it has been observed that an issue of law can be overruled later on. Union of India  v. Major S.P. Sharma and others, (2014) 6 SCC 351

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