The Messenger of Allah's ﷺ right hand was for his purification and his food, while his left hand was for the toilet and anything unclean.
حدثنا أبو توبة الربيع بن نافع حدثني عيسى بن يونس عن ابن أبي عروبة عن أبي معشر عن إبراهيم
كانت يد رسول الله ﷺ اليمنى لطهوره وطعامه وكانت يده اليسرى لخلائه وما كان من أذى
[Its chain of transmission is daif] Ahmad narrated it: 6/265, from the hadith of Saeed bin Abu Aruba, with this wording. Saeed bin Abu Aruba is a mudallis and he narrated using "an" without specifying direct hearing, and Ibrahim did not hear from Ayesha . The preceding hadith, no. 32, serves in its place.