It was narrated that Hani bin Hani said that:
'Ammar entered upon 'Ali and he said: "Welcome to the good and the purified. I heard the Messenger of Allah say: 'Ammar's heart overflows with faith (Literally, up to the top of his bones).'"
English reference: Vol. 1, Book 1, Hadith 147
Arabic reference: Book 1, Hadith 152