To love the Prophet and his Progeny (Tawalla)
And to dissociate from their Enemies (Tabarra)
“Tawalla” means to love God and His prophet, messenger, and the Imams.
“Tabarra” means to dissociate oneself from the enemies of God, and enemies of the Prophet and the Imams.
Since loving a person means following his footsteps and hating one means refraining from doing what one does, the love of God and His representatives means obedience to Him and His Representatives in matters of religion and blessings of the hereafter.
Hatred of enemies of God and His representatives necessitates dissociation and refraining from their deeds and words.