How Do We Demonstrate Our Love for Allah and His Messenger?
By obeying and following their commands.
Evidence from the Noble Qur'an
{Say (O Muhammad to mankind) if you really love Allaah then follow me, Allaah will love you}, {Soorah Aal-'Imraan, verse 31]
Evidence from the authentic Sunnah
((None of you have perfect faith until you love me more than your parents, children, and all mankind)), [Transmitted by al-Bukhaaree and Muslim]