From Sahih Muslim (Hadith 554):
Uqba b. 'Amir al-Juhani reported: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
Reference: Muslim 554