So-called Imperial Core "leftists" whine for their treats from third world child laborers while Lenin tells them what really should be done while the productive forces are being built. Thank you TPUSA for exposing these pseudo-left DSA Karens what true socialism is all about! Only bugs shall be given to those who disagree with Lenin's message!
It was actually in the 1936 constitution too. It's a catchphrase that is meant to show that the working class is now the dominant class (the bourgeoisie don't work) and that no one is entitled to anyone else's labor.
Anyone who tries to present this as anything other than a clear indicator of the class composition of the Bolsheviks is trying to sell you a bridge. Especially because this phrase was always followed with explanation of welfare systems and conditions where it doesn't hold.
The idea is that this is the baseline and everyone is taken care of from there. Anyone who tries to accumulate capital through others labor will be starved and the bourgeois class they belong to must vanish.