Sahih Muslim 1343
صحيح مسلم#1343SahihAbu Zubair reported:Ibn Zubair uttered at the end of every prayer after pronouncing salutation (these words):" There is no god but Allah. He is alone. There is no partner with Him. Sovereignty belongs to Him and He is Potent over everything. There is no might or power except with Allah. There is no god but Allah and we do not worship but Him alone. To Him belong all bounties, to Him belongs all Grace, and to Him is worthy praise accorded. There is no god but Allah, to Whom we are sincere in devotion, even though the unbelievers should disapprove it." (The narrator said): He (the Holy Prophet) uttered it at the end of every (obligatory) prayer
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 5:180