I do not know whose statement it is:" It is the last word of the Messenger of Allah (ﷺ) which is accepted as (final as it abrogates the previous ones)."
Sahih Muslim Book 13, Hadith 111
← Previous Hadith Ibn Abbas (Allah be pleased with him) reported that the Messenger of Allah (ﷺ) went out during the month of Ramadan in the year of Victory (when Mecca was conquered) and was fasting till he reached Kadid (a canal situated at a distance of forty-two miles from Mecca) and he then broke the fast. And it was the habit of the Companions of the Messenger of Allah (ﷺ) to follow him in every new thing (or act). So they followed him also (in this matter).

Sahih Muslim Book 13, Hadith 110 Next Hadith → The Messenger of Allah (ﷺ) marched on Mecca on the morning of 14th of Ramadan (lit. when thirteen nights had passed).

Sahih Muslim Book 13, Hadith 112