Abdullah bin Yasar (may Allah have mercy on him) relates: A man from the tribe of Juhaynah died on a hot day. When the next day came, I sat with Sayyiduna Sulayman bin Surad and Khalid bin Urfutah (may Allah be pleased with them both), and they both said: What prevented you from informing us of the funeral of this righteous man so that we could attend it? We said: It was very hot, and the man had been suffering from a stomach illness. At this one of them said to his companion: Did you not hear the Prophet (peace and blessings be upon him) say: "Whoever is killed by his belly will not be punished in his grave"? He said: Certainly.
Hadith Referenceالمعجم الكبير للطبراني / باب الخاء / 4088