Everything in this book that is narrated from Al-Qasim ibn Sulayman has been transmitted by me from Muhammad ibn Al-Hasan - may Allah (swt) have mercy on him - from Muhammad ibn Al-Hasan Al-Saffar, from Muhammad ibn 'Isa ibn 'Ubayd, from Al-Nadr ibn Suwayd, from Al-Qasim ibn Sulayman.