IPC 331: Section 331 of the Indian Penal Code

Whoever voluntarily causes grievous hurt for the purpose of extorting from the sufferer or from any person interested in the sufferer any confession or any information which may lead to the detection of an offence or misconduct, or for the purpose of constraining the sufferer or any person interested in the sufferer to restore or to cause the restoration of any property or valuable security, or to satisfy any claim or demand or to give information which may lead to the restoration of any property or valuable security shall be punished with imprisonment of either description for a term which may extend to ten years, and shall also be liable to fine.