Prohibitions for someone entering Hajj and what happens if they're broken
If you're planning to go for Hajj, it's important to remember the main restrictions while in the state of ihram: men can't wear stitched clothing or cover their heads, and women can't cover their faces or hands. Removing hair, trimming nails, using perfumes, hunting, and harming any plants on the Haram grounds are all off-limits. Sexual intimacy is totally forbidden until you've completed the Hajj. If you break any of these rules, there's a penalty: either offer a sacrifice, fast, or distribute grain. If you did it unknowingly or forgot, there might be no penalty, but for things like removing hair or nails, or damaging nature, you still have to pay. Sexual intimacy needs a separate atonement.
https://islamdag.ru/veroucheni