3. Subordination of Courts.—For the purposes of this Code, the District Court is subordinate to the High Court, and every Civil Court of a grade inferior to that of a District Court and every Court of Small Causes is subordinate to the High Court and District Court.
Section 3 CPC: Subordination of Courts
Bare Act text
Text of the Code of Civil Procedure, 1908 (Act No. 5 of 1908), as amended, including the changes for commercial disputes made by the Commercial Courts Act, 2015. Source: India Code, Government of India.
In simple words
For the purposes of the Code, the District Court is subordinate to the High Court. Every Civil Court of a grade lower than a District Court, and every Court of Small Causes, is subordinate to both the High Court and the District Court. The section thus sets out the hierarchy of civil courts that governs appeals, transfers and supervision under the Code.