Hazrat Abu Hurairah رضي الله عنه narrates that Sayyiduna Rasoolullah صلى الله عليه وسلم said; “I have been sent to perfect and complete good character.” (Majma’, Vol 8, Page 412 – Bazzār)
Note: Many Ahādīth narrate the fact that the mission of Sayyiduna Rasoolullah صلى الله عليه وسلم was to perfect and promulgate sublime conduct. Thus Sayyiduna Rasoolullah صلى الله عليه وسلم practically demonstrated to the world the most pristine code of sublime conduct.
(SOURCE: THE SUBLIME CONDUCT OF NABĪ صلى الله عليه وسلم, PART 4 by Mufti Muhammad Irshaad Qāsimī)