A hadith like this has been transmitted on the authority of 'A'isha through another chain of narrators.
The Book of Divorce - Sahih Muslim 1477f
This narration transmitted from 'A'isha (may Allah be pleased with her) through an alternative chain of narrators (ṭarīq) serves to strengthen the authenticity of the ruling. When a ḥadīth is transmitted through multiple independent chains (mutāba'āt), it elevates the certainty of its preservation and demonstrates the care of the ummah in safeguarding the Prophetic Sunnah.
The scholars of ḥadīth distinguish between primary chains (aṣl) and supporting chains (shawāhid). This transmission falls under the category of shawāhid, which corroborates the original narration and eliminates any doubt about its authenticity. Such multiple transmissions indicate the importance Companions placed on accurately conveying the Prophet's teachings regarding marital affairs.
In legal matters, particularly in sensitive issues like divorce, the existence of multiple transmission paths provides jurists with greater confidence in deriving rulings. This principle of corroboration (ta'akkud) is fundamental in Islamic legal theory, ensuring that rulings are based upon well-established evidence from the purified Sunnah.