The author; the FaqÄ«h Shaykh, Abu JaÊ¿far Muḥammad ibn AlÄ« ibn Huá¹£ayn ibn MÅ«sÄ ibn BÄbawayh QummÄ« (mGbhs) said:
  ṢafwÄn b. MihrÄn narrated from ImÄm á¹¢Ädiq (pbuh), that he stated, ‘The individual who acknowledges all [12 infallible] ImÄms [pbuh] but denies MahdÄ« [mGehr], is like the one who acknowledges all prophets (pbu th) but denies Muḥammad (pbuh&h)’s prophet hood!