The people said to Jundub [radiyallaahu-anhu], “Advise us.” He said: “The first thing of the human body to putrefy is the abdomen, so he who can eat nothing but good food [halaal and earned lawfully] should do so, and he who does as much as he can that nothing intervenes between him and paradise by not shedding even a handful of blood [i.e. unlawful killing], should do so.”

Bukhaari 7152