(a) Al-Zuhri (may Allah have mercy on him) said: Tawus (may Allah have mercy on him) said: I said to Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both): "They mention that the Messenger of Allah (peace and blessings be upon him) said: 'Take a ritual bath on Friday and wash your heads, even if you are not in a state of major ritual impurity (junub), and apply some perfume.'" Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: "As for the ritual bath, yes; as for perfume, I do not know."
(b) Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him): "The ritual bath on Friday is obligatory upon every adult," and Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates from the Prophet (peace and blessings be upon him): "Whoever takes a ritual bath on Friday like the bath for major impurity, then goes," and then he mentioned going after the bath in the first, second, third, fourth and fifth hour.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1418