حَدَّثَنَا حَسَنُ بْنُ الرَّبِيعِ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ أَيُّوبَ وَهِشَامٍ، عَنْ مُحَمَّدٍ، وَحَدَّثَنَا فُضَيْلٌ عَنْ هِشَامٍ، قَالَ: وَحَدَّثَنَا مُخَلَّدُ بْنُ حُسَيْنٍ، عَنْ هِشَامٍ، عَنْ مُحَمَّدِ بْنِ سِيرِينَ، قَالَ: «إِنَّ هَذَا الْعِلْمَ دِينٌ، فَانْظُرُوا عَمَّنْ تَأْخُذُونَ دِينَكُمْ».
Translation: Ḥasan b. al-Rabīʿ told us: Ḥammād b. Zayd told us, from Ayyūb and Hishām, from Muḥammad. Fuḍayl also narrated to us from Hishām; and Mukhlad b. Ḥusayn narrated to us from Hishām, from Muḥammad b. Sīrīn, who said: “This knowledge is religion, so examine from whom you take your religion.”
Here Muḥammad is Ibn Sīrīn and the first Hishām is Hishām b. Ḥassān, as al-Nawawī clarifies. The several routes identify how the Successor’s statement was transmitted; it is not a Prophetic report.