You'll need to complete the questline to unlock the ability to purchase the Torture Chamber, which you can use to quickly raise your Destruction level. Once you complete the "Hail, Sithis!" quest, you'll be able to start the "Where You Hang Your Enemy's Head" quest by speaking with Nazir. Purchase the Torture Chamber for 5,000 gold. Cast your Destruction spells so that you damage the people bound in the torture room. Make sure that you don't kill them, as they will not respawn.  You can enchant your equipment with Destruction cost reduction enchantments, which will lower the Magicka required to cast the spells. Use healing magic to heal the hurt prisoners, which can help boost your Restoration level as well. This will take an hour or so. You can wait an hour in-game to recharge your magicka when you run out.

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Write a summary of the previous text in Indonesian:
Selesaikan rangkaian tugas “Dark Brotherhood” untuk menaikkan level sihir penghancur atau “Destruction”. Serang orang-orang di dalam ruangan penyiksaan dengan mantra penghancur atau “Destruction”, tanpa membunuh mereka. Tetap serang dan pulihkan tahanan hingga level “Destruction” penuh.