It was narrated that 'Ali bin Abu Talib said:
"The Messenger of Allah (ﷺ) said: 'Faith is knowledge in the heart, words on the tongue and action with the physical faculties. (limbs of the body).'" (Maudu') (ID)
English reference (ID): Vol. 1, Book 1, Hadith 65 (ID)
Arabic reference (ID): Book 1, Hadith 68 (ID)