This hadith has been narrated on the authority of Ibn Shibab through another chain of transmitters.
The Book of Virtues - Sahih Muslim 2327 c
This narration from Sahih Muslim, transmitted through the esteemed authority of Ibn Shihab al-Zuhri via an alternative chain of narrators (isnad), demonstrates the rigorous methodology of hadith verification. When a tradition is reported through multiple independent chains, it attains greater reliability and authenticity in our scholarly tradition.
The mention of an alternative chain (ṭarīq) indicates the careful preservation of the Prophet's teachings through various reliable companions and successors. This multiplicity of transmission routes strengthens the hadith's authenticity and reflects the meticulous efforts of early Muslim scholars in preserving the Sunnah.
Ibn Shihab al-Zuhri, being among the foremost scholars of hadith in the second generation, represents a pillar of reliable transmission. His narrations through different chains further confirm the soundness of this particular tradition regarding the virtues being discussed.