Under the Bharatiya Nyaya Sanhita, 2023, which of the following is not a punishable offence?

Mere preparation to commit murder is not itself a punishable offence under the Bharatiya Nyaya Sanhita, 2023; an attempt, a conspiracy or another independently constituted offence is different. The Sanhita expressly punishes preparation to commit dacoity under section 310(4) (formerly section 399 IPC), collecting men, arms or ammunition or otherwise preparing to wage war against the Government of India under section 149 (formerly section 122 IPC), and making preparations to commit depredation on the territories of a foreign State at peace with the Government of India under section 154 (formerly section 126 IPC).