It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both); he said: The Messenger of Allah (peace and blessings be upon him) ate a meaty bone (that is, a shoulder) in the house of Duba'ah bint al-Harith (may Allah be pleased with her), then prayed without touching water.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10613