I said to Ibn ʿAbbas, "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 ʿAbbas 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.) (Using translation from Bukhārī 884)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ اغْتَسِلُوايَوْمَ الْجُمُعَةِ وَاغْسِلُوا رُءُوسَكُمْ وَإِنْ لَمْ تَكُونُوا جُنُبًا وَمَسُّوا مِنَ الطِّيبِ قَالَ فَقَالَ ابْنُ عَبَّاسٍ أَمَّا الطِّيبُ فَلا أَدْرِي وَأَمَّا الْغُسْلُ فَنَعَمْ  

[Machine] The messenger of Allah ﷺ said, "Take a bath on the day of Friday and wash your heads, unless you are in a state of impurity, and touch some fragrance."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «اغْتَسِلُوا يَوْمَ الْجُمُعَةِ وَاغْسِلُوا رُءُوسَكُمْ إِلَّا أَنْ تَكُونُوا جُنُبًا وَمَسُّوا مِنَ الطِّيبِ»  

I said to Ibn ʿAbbas, "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 ʿAbbas 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.) (Using translation from Bukhārī 884)   

أَنَّ النَّبِيَّ ﷺ قَالَ «اغْتَسِلُوا وَاغْسِلُوا رُءُوسَكُمْ وَإِنْ لَمْ تَكُونُوا جُنُبًا وَأَصِيبُوا مِنَ الطِّيبِ» فَقَالَ ابْنُ عَبَّاسٍ فَأَمَّا الْغُسْلُ فَنَعَمْ وَأَمَّا الطِّيبُ فَلَا أَدْرِي  

"اغتسِلوا يومَ الجُمعة، واغْسِلُوا رُءُوسكم، وإنْ لمْ تكونوا جُنبًا، ومَسُّوا من الطيبِ".