Everything in this book that is narrated from Sa'dan ibn Muslim, whose name is Abdur Rahman ibn Muslim, has been transmitted by me from Muhammad ibn Al-Hasan - may Allah (swt) be pleased with him - from Muhammad ibn Al-Hasan Al-Saffar, from Al-Abbas ibn Ma'ruf and Ahmad ibn Ishaq ibn Sa'd together, from Sa'dan ibn Muslim. [CCHAPTER=Clarification of the transmission chain to Al-Rayan ibn Al-Salt] بيان الطريق إلى الرّيّان بن الصلت‌ معتبر