Don't be idle, it's white and sad.
Among them, the word "equal" of "equal leisure" may be somewhat illegible, which is a common calligraphy font style. In addition, the word "empty" may be difficult to recognize, because the last stroke of the word "empty" is often written like the end of the word "cut", especially in running script and cursive script.
Generally speaking, the content of this calligraphy work is "Don't idle away, grow old together", which is a classic maxim, meaning don't idle away your time, or it will be too late to regret when you get old.