It is narrated from Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with them both): "We used to take a bath for five things: after cupping, from the bathhouse, after plucking the armpit hair, for major impurity, and on Friday."
Al-A'mash (may Allah have mercy on him) said: I mentioned this to Ibrahim (may Allah have mercy on him), and he said: "They did not consider any bath obligatory except that of major impurity, and they regarded the bath on Friday as recommended."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1432