(5) باب فِي أَنَّ الإِسْنَادَ مِنَ الدِّينِ وَأَنَّ الرِّوَايَةَ لَا تَكُونُ إِلَّا عَنْ الثِّقَاتِ وَأَنَّ جَرْحَ الرُّوَاةِ بِمَا هُوَ فِيهِمْ جَائِزٌ بَلْ وَاجِبٌ وَأَنَّهُ لَيْسَ مِنْ الْغِيبَةِ الْمُحَرَّمَةِ بَلْ مِنْ الذَّبِّ عَنْ الشَّرِيعَةِ الْمُكَرَّمَةِ
Hasan bin ur-Rabī' narrated to us, Hammād bin Zayd narrated to us, on authority of Ayyūb and Hishām [bin Hassān], on authority of Muhammad [bin Sīrīn] ; and Fuḍayl [bin Īyāḍ] narrated to us on authority of Hishām [bin Hassān]; he said Mukhlad bin Husayn narrated to us, on authority of Hishām [bin Hassān], on authority of Muhammad bin Sīrīn , that he said:
'Indeed this knowledge is faith, so carefully consider from whom you take your faith'.
Reference: Sahih Muslim Introduction 26
In-book reference: Introduction, Narration 25