, ▁but ▁were ▁subject ▁to ▁a ▁tax ▁( j iz y ah ) ▁which ▁was ▁not ▁im posed ▁upon ▁Muslim s . ▁This ▁situation ▁may ▁actually ▁have ▁made ▁w ides p read ▁conversion ▁to ▁Islam ▁und es irable ▁from ▁the ▁point ▁of ▁view ▁of ▁state ▁re venue , ▁and ▁there ▁are ▁reports ▁that ▁provincial ▁govern ors ▁act ively ▁disc ou rag ed ▁such ▁convers ions . ▁It ▁is ▁not ▁clear ▁how ▁U mar ▁attempted ▁to ▁resolve ▁this ▁situation , ▁but ▁the ▁sources ▁port ray ▁him ▁as ▁having ▁ins isted ▁on ▁like ▁treatment ▁of ▁Arab ▁and ▁non - A rab ▁( ma w ali ) ▁Muslim s , ▁and ▁on ▁the ▁removal ▁of ▁obst acles ▁to ▁the ▁conversion ▁of ▁non - A rab s ▁to ▁Islam . ▁ ▁Later ▁Mar wan id ▁period ▁After ▁the ▁death ▁of ▁U mar , ▁another ▁son ▁of ▁Abd ▁al - Mal ik , ▁Y az id ▁II ▁( 7 2 0 – 7 2 4 ) ▁became ▁cal i ph . ▁Y az id ▁is ▁best ▁known ▁for ▁his ▁" icon oc last ic ▁ed ict ", ▁which ▁ordered ▁the ▁destruction ▁of ▁Christian ▁images ▁within ▁the ▁territory ▁of ▁the ▁C ali ph ate . ▁In ▁ 7 2 0 , ▁another ▁major ▁revol t ▁arose ▁in ▁Ira q , ▁this ▁time ▁led ▁by ▁Y az id ▁ibn ▁al - M uh all ab . ▁ ▁C ali ph ate ▁of ▁H ish am ▁and ▁end ▁of ▁expansion ▁ ▁The ▁final ▁son ▁of ▁Abd ▁al - Mal ik ▁to