Clarification of the Transmission Chain to Amr Ibn Shumr

Everything in this book that is narrated from Amr ibn Shumr has been transmitted by me from Muhammad ibn Musa ibn Al-Mutawakkil - may Allah سبحانه وتعالى be pleased with him - from Ali ibn Al-Husayn Al-Sadabadi, from Ahmad ibn Abi Abdullah Al-Barqi, from his father, from Ahmad ibn Al-Nadr Al-Khazzaz, from Amr ibn Shumr.