Midrasch zu Jehoschua 14:10

Rabba b. b. Chana said: "What is the meaning of the passage (Jos. 14, 10) For the ways of the Lord are right and the just do walk in them.; but the transgressors do stumble therein? This may be likened unto two men who roasted their paschal lamb. One ate it with the intention of performing the religious commandment, while the other ate it with the intention of having an ordinary meal. Concerning the one [who ate it for the purpose of performing a religious duty], the passage reads, And the just shall walk in them. But concerning the one [who ate it for the purpose of eating ordinary meal], the passage reads, But transgressors will stumble through them." Resh Lakish thereupon said to him' "Do you intend to call such a man who ate for the purpose of a plain meal wicked? Granted that he did not perform a perfect commandment, nevertheless he did eat a paschal lamb!"