Abu Waqid al-Laithi told that a man said, "Messenger of God, we live in a land where we are afflicted by hunger, so when may we eat animals which have died a natural death?" He replied, "As long as you do not have a morning drink or an evening drink or gather vegetables you may eat them," meaning that when you do not find a morning drink or an evening drink, or find a vegetable to eat, animals which have died a natural death are allowable to you.
Al-Fujai' al-'Amiri told that he came to the Prophet and asked what animals which had died a natural death might be eaten. He asked what they ate, and on receiving the reply niaghtabiq wa-nastabih, which was explained to Abu Nu'aim by 'Uqba as meaning that they drank a cup in the morning and a cup in the evening, he said, "That, by my father, is hunger," and permitted them in such circumstances to eat what had died a natural death.
