You are dearer to me than my own self

To love the Messenger Muhammad (ﷺ) is a part of faith

Narrated `Abdullah bin Hisham:

We were with the Prophet (ﷺ) and he was holding the hand of `Umar bin Al-Khattab. `Umar said to Him, "O Allah's Messenger (ﷺ)! You are dearer to me than everything except my own self." The Prophet (ﷺ) said, "No, by Him in Whose Hand my soul is, (you will not have complete faith) till I am dearer to you than your own self." Then `Umar said to him, "However, now, by Allah, you are dearer to me than my own self." The Prophet (ﷺ) said, "Now, O `Umar, (now you are a believer).

Sahih al-Bukhari, Book of Oaths and Vows, Chapter: How did the oaths of the Prophet (ﷺ) use to be? Hadith: 6257