Ibn Hawshab
... that the Isma'ili leader Ibn Hawshab had to surrender his son as hostage to a rival, who returned him after a year with a golden necklace as a gift?
... that the <a href="./Isma'ilism" id="mwApE" rel="mw:WikiLink" title="Isma'ilism">Isma'ili</a> leader <b id="mwApI"><a href="./Ibn_Hawshab" id="mwApM" rel="mw:WikiLink" title="Ibn Hawshab">Ibn Hawshab</a></b> had to surrender his son as hostage to a rival, who returned him after a year with a golden necklace as a gift?