أَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنِ الْحَكَمِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ خَطَبَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَقَالَ ‏"‏ إِذَا رَاحَ أَحَدُكُمْ إِلَى الْجُمُعَةِ فَلْيَغْتَسِلْ ‏"‏ ‏.‏

It was narrated from Ibrahim bin Nashit that

He asked Ibn Shihab about ghusl on Friday. He said: "It is a sunnah; Salim bin 'Abdullah told me, narrating from his father, that the Messenger of Allah (ﷺ) spoke about it from the minbar."