According to Vladimir Lenin, “He who does not work shall not eat” is a necessary principle under socialism, the preliminary phase of the evolution towards communist society

Soviet 1938 constitution

In the USSR work is a duty and a matter of honor for every able-bodied citizen, in accordance with the principle: “He who does not work, neither shall he eat”.

Also

Joseph Stalin had quoted Vladimir Lenin during the Soviet famine of 1932–1933 declaring: “He who does not work, neither shall he eat.”