It is narrated from Sayyiduna al-Fakih bin Sa'd (may Allah be pleased with him), who was a Companion, that the Messenger of Allah (peace and blessings be upon him) used to take a ritual bath (ghusl) on Friday, on the day of Arafah and on the Day of Sacrifice.
Hadith Referenceالمعجم الكبير للطبراني / باب الفاء / 15919