From Sahih Muslim (Hadith 801):
This hadith is narrated by Muhammad b. 'Amr b. Ata' with these words:I was with Ibn 'Abbas, and Ibn 'Abbas saw the Messenger of Allah (ﷺ) doing like this, and it is also said that the words are: He (the Holy Prophet) offered prayer; and the word" people" is not mentioned
Reference: Muslim 801