 the book keeping the secret was written by abu uthman amr ibn bahr aljahiz with the help support will and guidance of god. and god is the guide to what is right through his mercy.
تم كتاب كتمان السر من كلام أبي عثمان عمرو بن بحر الجاحظ، بعون الله وتأييده، ومشيئته وتوفيقه. والله الموفق للصواب برحمته.