Sayedna Ibn Abbas (may Allah be pleased with them both) was asked that people say the Prophet (peace and blessings be upon him) said: "Perform ghusl (ritual bath) on Friday and wash your heads thoroughly, even if you are not in a state of janabah (major impurity), and use perfume." Ibn Abbas (may Allah be pleased with them both) replied that as for ghusl, yes (I also know that the Prophet, peace be upon him, commanded it), but as for perfume, I do not know.