It is narrated from Sayyidah Umm Subayyah al-Juhaniyyah (may Allah be pleased with her) that my hand and the hand of the Messenger of Allah (peace and blessings be upon him) would meet in a single vessel while performing ablution.
Imam Bukhari (may Allah have mercy on him) said that this Salim is Ibn Sarj, and he is also called Ibn Kharbudh Abu al-Nu'man. Some said: he is Ibn al-Nu'man. (b) Imam Bukhari (may Allah have mercy on him) said that he was the freed slave of Umm Subayyah (may Allah be pleased with her), and her (Umm Subayyah's) name was Khawlah bint Qays.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 912