HE IS THE EIGHT OF THE TWELVE IMAMS AND HIS REAL NAME IS ALI BIN MUSA ER-RIZA.HE TOOK HIS GRANDFATHER,HOLY ALI’S,BONES FROM HIS TOMB AND CARRIED IT TO MAZAR-I SHARIF AT AFGHANISTAN JUST BEFORE THE ADMINISTRATION OF HIS TIME ATTEMPTED TO DESTROY HOLY ALI’S TOMB,FOR ITS BEING VISITED BY TOO MANY PEOPLE.IMAM RIZA WAS ALSO STAYED IN CITY OF MAZAR-I SHARIF AND STARTS TEACHING ISLAM TO THE PEOPLE LIVING THERE.HE ALSO GIVES HIS DAUGHTERS TO TURKISH GOVERNORS OF THE REGION AND TOOK THEIR DAUGHTERS AS BRIDE TO HIS SON.CALIPH ME’MUN CALLED ON IMAM RIZA BY DECEIVING HIM WITH SAYING THAT HE WILL WORK FOR IMAM RIZA TO BECOME THE NEXT CALIPH.ONE YEAR AFTER COMING TO CITY OF TUS KHORASAN,WHERE CALIPH ME’MUN WAS LOCATED,IMAM RIZA,WAS THROWN INTO PRISON.HE WAS THEN MARTYRED BY SOLDIERS SYRINGING POISON TO THE GRAPES THAT HE WAS GOING TO EAT.THE TOMB,THAT HE BURIED HIS GRANDFATHER’BONES WAS TURNED INTO A MAUSOLEUM(TURBE) BY SULTAN SANJAR,RULER OF SELJUK EMPIRE.THEN RULER TIMUR HAD TURNED THE MAUSOLEUM A PLACE FOR VISIT.THE MAUSOLEUM IS STILL BEING VISITED BY OVER ONE MILLION PEOPLE EACH YEAR.