The love of Nabi Sallallahu alaihi wasallam is a part of Iman. He said that none of you can become perfect believers unless he loves me more than his parents, children and all the people. When a person loves someone, then all things associated with him are also loved by him. If the walls can be kissed for the love of Layla, then which aspect of Nabi Sallallahu alaihi "wasallam will not be in the heart of a Muslim.
Majnoon the poet, says in a couplet that when he passes the city of Lay la, his beloved, he kisses the walls of the city. It is not the love of the city that has made him do this, but the love of the one who lives in the city. Tha'alibi writes in Fiqhul Lughah that the one who loves Allah will most certainly love his Messenger and whoever loves his Messenger will love the Arabs. The one who loves the Arabs will definitely love Arabic, the language of the best of books (the Quran), revealed to the noblest of Messengers. Whoever loves Arabic will devote his attention to it.
Salman Radiallahu anhu was a beloved Sahabi (companion) of Nabi Sallallahu alaihi "wasallam. Notwithstanding his elevated status in the eyes of Nabi Sallallahu alaihi wasallam, he said to him : "Do not have hatred for me otherwise you will lose your Deen." Salman asked in surprise as to how he could have hatred for him, especially when he received guidance from him. Nabi Sallallahu alaihi -wasallam replied that if he began hating the Arabs, it would lead to having hatred for him.
10 Baihaqi in Shuabul Iman.