I think Dugin's book is like that. Sure, Dugin said it, not Putin. But IIRC Putin did some things to make Dugin's book more influential. I forget the specifics - making it required reading in the Russian military academies, maybe?
There have been other statements by Russian politicians who are widely regarded as Putin's mouthpieces. Medvedev, certain key figures in the Russian parliament. I know I've seen that, though I don't recall the specifics.
So Putin maybe didn't say it. And yet, his endorsed mouthpieces (more than one) do say it.
You said "without having seen a source". Well, I didn't give you one. But if you want to look, I have given some places to start.