Musannaf Ibn Abi Shayba 21:152

Yazid ibn Harun narrated to us, he said: Abu Abd al-Rahman—who is Umayyah ibn Fadalah—narrated to us, he said: Bakr ibn Abd Allah al-Muzani narrated to us, he said: Abu Dharr said: "Sufficient from supplication, along with righteousness, is what is sufficient of salt for food."