In this report of a saying:
• ʿAbd al-Wāḥid ibn Ziyād narrated from al-Aʿmash.
• Al-Aʿmash narrated from Abū Ṣāliḥ.
• Abū Ṣāliḥ narrated from Abū Hurayrah.
Abū Hurayrah transmits it as a saying of the Prophet ﷺ.
1. ʿAn (عن): in a chain means “narrates from.” This is the relevant part of the chain, not the full chain.