Why Ghusl Was Mandatory Back Then.. (Ahadith 723 – 724)
Hadith no. 722 is a repeat. Read it here.
(the wife of the Prophet) The people used to come from their abodes and from Al-‘Awali (i.e. outskirts of Medina up to a distance of four miles or more from Medina). They used to pass through dust and used to be drenched with sweat and covered with dust; so sweat used to trickle from them. One of them came to Allah’s Apostle who was in my house. The Prophet said to him, “I wish that you keep yourself clean on this day of yours (i.e. take a bath).”
Narrated Yahya bin Said:
I asked ‘Amra about taking a bath on Fridays. She replied, ” Aisha said, ‘The people used to work (for their livelihood) and whenever they went for the Jumua prayer, they used to go to the mosque in the same shape as they had been in work. So they were asked to take a bath on Friday.’ “
Read more on it here.