Which section of the Bharatiya Nyaya Sanhita, 2023 prescribes the punishment for murder committed by a…

Section 104 of the Bharatiya Nyaya Sanhita, 2023 deals with "Punishment for murder by life-convict" and provides that whoever, being under sentence of imprisonment for life, commits murder, shall be punished with death or with imprisonment for life, which shall mean the remainder of that person's natural life (reforming former Section 303 IPC, which had been struck down in Mithu v. State of Punjab). Section 101 defines murder, Section 103 prescribes the punishment for murder generally (and group murder under sub-section (2)), and Section 105 prescribes the punishment for culpable homicide not amounting to murder.