The Prophet (peace_be_upon_him) said: It is necessary for every adult (person) to go for (saying) Friday (prayer), and for everyone who goes for Friday (prayer) washing is necessary.

The Prophet (peace_be_upon_him) said: It is necessary for every adult (person) to go for (saying) Friday (prayer), and for everyone who goes for Friday (prayer) washing is necessary.
Source: HOTD