It is narrated from Sayyiduna Hasan bin Ali (may Allah be pleased with him) that he entered the toilet and found a morsel or a piece of food lying in the channel of filth. He picked it up, removed the dirt from it and washed it very well, then gave it to his slave and said: "O slave, remind me of this morsel when I have finished ablution." When he had finished ablution, he said to the slave: "O slave, give me that morsel, or piece." He said: "O my master, I have eaten it." He said: "Go, you are free for the sake of Allah." The slave then asked: "O my master, for what reason have you freed me?" He said: "I heard Sayyidah Fatimah, the daughter of the Messenger of Allah (may Allah be pleased with her), relating from her honoured father, the Messenger of Allah (peace and blessings be upon him): 'Whoever picks up a morsel or a piece of food from the channel of urine and excrement, then removes the dirt from it, washes it very well and eats it, it does not even settle in his stomach before he is forgiven.' So I would not have a man from the people of Paradise serve me."
Hadith Referenceمسند أبي يعلى الموصلي / مسند فاطمة بنت رسول الله صلى الله عليهما / 6750
Hadith Takhrij«قال سعيد بن محمد السناري: موضوع» «أخرجه مجمع الزوائد ومنبع الفوائد برقم: 7974، وأخرجه المطالب العالية بزوائد المسانيد الثمانية برقم: 2426، وأخرجه إتحاف الخيرة المهرة بزوائد المسانيد العشرة برقم: 3595، 4978، مسند ابویعلیٰ ترقیم الاثری: 6717»