Taking as evidence the saying of the Prophet (peace and blessings be upon him): "Throw it (that is, the dead mouse) and what is around it (of the ghee) away."
And his (peace and blessings be upon him) saying: "And if it (the ghee) is melted (liquid), then do not go near it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / Q19624
Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) says that the Prophet (peace and blessings be upon him), in the mosque, raised his gaze toward the sky, smiled, and said three times: "May Allah curse the Jews! When Allah made fat unlawful for them, they sold it and consumed its price. When Allah makes the eating of something unlawful for a people, consuming its price is also unlawful."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19624