Sahih Bukhari

Narrated Tawus:I said to Ibn `Abbas, ""The people are narrating that the Prophet (ﷺ) said, 'Take a bath on Friday and wash your heads (i.e. take a thorough bath) even though you were not Junub and use perfume'."" On that Ibn `Abbas replied, ""I know about the bath, (i.e. it is essential) but I do not know about the perfume (i.e. whether it is essential or not)