The relevant part of the example's sanad is:
عن محمد بن عمرو عن ابي سلمة عن ابي هريرة
Meaning: Muḥammad ibn ʿAmr transmits from Abū Salamah, who transmits from Abū Hurayrah.
Considering Muḥammad ibn ʿAmr's lesser memory precision, the report is ḥasan; with its other transmissions, it is ṣaḥīḥ li-ghayrihi.
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Ṣaḥīḥ li-Ghayrihi: Definition, Corroboration, and Example
The relevant part of the example's sanad is:
عن محمد بن عمرو عن ابي سلمة عن ابي هريرة
Meaning: Muḥammad ibn ʿAmr transmits from Abū Salamah, who transmits from Abū Hurayrah.
Considering Muḥammad ibn ʿAmr's lesser memory precision, the report is ḥasan; with its other transmissions, it is ṣaḥīḥ li-ghayrihi.