Islam in Yemen dates back to about 630 AD, when it was introduced by Ali who finalized the conquest of it when Muhammad was still alive.
[8] The Zaidis of the northern highlands dominated politics and cultural life in northern Yemen for centuries; with Unification of Yemen, and the addition of the south’s almost totally Sunni Muslim population, the numerical balance has shifted dramatically away from the Zaidis.
Houthi authorities in Sana’a formally enacted new regulations on the collection and use of zakat, the Islamic obligation for individuals to donate a portion of their wealth each year to charitable causes.
The executive bylaw, signed by Mehdi al-Mashat, president of the Houthi-run Supreme Political Council (SPC), imposes a khums tax (literally meaning “one-fifth”, or 20 percent) on economic activities involving natural resources in areas under the group’s control in Yemen, which includes most of northern Yemen where some 70 percent of the population lives.
Because the government is concerned that unlicensed religious schools deviate from formal educational rirements and promote militant ideology, it has closed more than 4,500 of these institutions[10] and deported foreign students studying there.