Ezekiel was to bake his food over a fire made with human excrement, as the Jews under siege in Jerusalem would have to do. The uncleanness of their food did not represent the type of food they would have to eat but the fact that they would have to eat their food among defiled people (in captivity, Ezekiel 4:13). The prophet complained that he had never eaten unclean food (cf. Ezekiel 44:31; Leviticus 22:8; Deuteronomy 12:15-19; Deuteronomy 14:21; Deuteronomy 23:9-14), so the Lord graciously allowed him to prepare his food over a fire made with cow"s dung rather than human feces. [source][source][source]
Ezekiel could not have been lying on his side continuously all day because he prepared meals during some of this time. In parts of the Middle East today, some people still use dried animal dung as fuel due to the scarcity of wood. [1] God acceded to Ezekiel"s request to substitute animal dung for human feces because the prophet wished to preserve his own purity and because the use of human waste, though more realistic, was not essential to the lesson Ezekiel was to teach the people (cf. Acts 10:14-15). [source][source][source]
". . . God was not so much trying to get Ezekiel to violate his own priestly responsibilities as to be reminded of how many compromises of what is usual and normal would have to be made by those cooped up in Jerusalem under overwhelming enemy pressure." [1][source]