The IPC 1860 was replaced by the BNS 2023 (in force 2024-07-01); no verified section mapping on file for Section 142 — confirm the corresponding provision (savings: Section 358, BNS 2023).
Whoever, being aware of facts which render any assembly an unlawful assembly, intentionally joins that assembly, or continues in it is said to be a member of an unlawful assembly.