Hadith #460 (Sahih Muslim)
Book: The Book of Purification
Narrator(s): Uqba bin 'Amir al-Juhayni
Grade: Sahih

Verily the Messenger of Allah (ﷺ) said and then narrated (the hadith) like one (mentioned above) except (this) that he said: He who performed ablution and said: I testify that there is no god but Allah, the One, there is no associate with Him and I testify that Muhammad is His servant and His Messenger.

Source: https://parallelquran.com/hadith/sahih-muslim-460/