1. In al-Kafi: Narrated from Hisham ibn Salim and others, from Abi ‘Abdillah (as) who said: There was nothing more loved by the Prophet of Allah (S) than remaining hungry and fearful in front of Allah (SwT).
2. From al-Saduq in al-Amali: From al-’Ays ibn al-Qasim who said: I said to al-Sadiq (as): A hadith has been narrated from your father that he said: “The Noble Prophet (S) never became sated with wheat bread,” is this correct? He replied: No, the Holy Prophet (S) never ate wheat bread, and he never became sated with bread made from barley
3. In al-Tabarsi’s al-Ihtijaj: In his narration from Musa ibn Ja’far, from his fathers, from Husayn ibn ‘Ali (as) in a long hadith on the questions of the Jewish man from Damascus to Amir al-Mu’minin (as): The Jew said to him: “They assert that ‘Isa (as) was an ascetic?” ‘Ali (as) said to him: “He was thus; and Muhammad (S) was the most abstemious of all the prophets. He had thirteen wives aside from numerous slave-girls, yet not once were leftovers picked up from his table-spread. He never ate wheat bread and never became sated with barley bread for three consecutive nights.
4. In Nahj al-Balagha: He (as) said: You should follow your Prophet, the pure, the chaste of all the people of the world he was the least sated and the most empty of stomach He left this world hungry but entered upon the next world perfect.
5. From al-Qutb in his Da’awat, he said: It is narrated that the Holy Prophet (S) never ate in a reclined posture except once, then (upon realizing) he sat upright and said: “O Allah! I am your servant and your messenger.
Note: This has also been narrated by al-Kulayni and al-Tusi with numerous different chains of narrators; and similarly by al-Saduq, al-Barqi; and al-Husayn ibn Sa’id in his book al-Zuhd
