Hoarding wealth by not paying zakah on it.
Shafi‘ jar
Al-qanun
Haqq bait al-mal
Al-hajjah al-asliyyah
Al-waziifah
Al-mazalim al-mushtaraka
Bai al-tawliyah
Al-’ard al-mukhtassah
Tujjar Musafirin
Net Equity Concept