(a) Muhammad bin al-Sabbah al-Bazzaz narrates it with the same chain and says that he (peace and blessings be upon him) would wash his hands.
(b) Imam Abu Dawud (may Allah have mercy on him) said that Ibn Wahb (may Allah have mercy on him) narrated this from Yunus (may Allah have mercy on him), in which the mention of eating is the statement of Sayyidah Aishah (may Allah be pleased with her).
(c) The Shaykh said that Layth bin Sa'd (may Allah have mercy on him) narrated it from al-Zuhri (may Allah have mercy on him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 980