With accent marks:
Под лежа́чий ка́мень вода́ не течёт.
Water does not flow under a lying stone.
In this proverb, the "lying stone" symbolizes a person who does not want to do anything. If nothing is done, things will not budge, nothing will change.
The proverb is usually used to talk about someone who does not take care of himself, does not want to change anything in his life, and expects someone to help him. As a result, the whole life can pass by and the person will not achieve anything.
With such a proverb, we encourage this person to action.
A close equivalent in English is "No song, no supper".
Other Russian proverbs
Patience and labor will grind everything.
Strike the iron while it's hot.
Bitter truth is better than sweet lies.
Оne sees the mote in another's eye and ignores the log in his own.
Free cheese is only in a mousetrap.
Hurry to much and you will make people laugh.
With a darling, even a hut is a paradise.
You see your friends in the times of trouble.