Imam al-Sadiq (a.s) has said: A Bedouin woman passing by the Holy Prophet who was eating on the earth said, “O Muhammad! I swear by Allah that you eat and sit on the earth like a servant of Allah.” The Holy Prophet said, “Woe to you! Who is more deserving than me to be a servant of Allah?” The woman said, “Give a morsel of your food to me!” The Holy Prophet gave her a morsel. The woman said, “No, give me the morsel in your mouth!” The Holy Prophet brought out the morsel from his mouth and gave it to her. The woman never experienced any pain in life until she died. (Al-Mahasin: 457/2, H 388.)