page 117....

......one night  hazrat abadaltalab dreamt  an elderly dignified manappeared before him who asked him to clean up the sand choking  the  well  of holy zam zam, , Hazrat  then had just one son  Haris  a young strong  man who  was attached  with the     hazrat  and got involved 8n the mission of the cleaning  up process,, the  quraish hazrat  successfully  with hus s9n managed to  bring the clean water to surface  and the society was able to get benefits  from  it, gazrat prayed if he gad ten such strong  sons all would  help  to remove sands choking  the well,   and as  the arab  tradition  was to give  up  one son  for the   cause of   their religion,  hazrat was blessed with twelve sons,    now it was to be decided  through   spiritual   practitioners  which son was to be given up,