It’s from the start of Mickey and the magic beanstalk. The voiceover really ups the misery by talking about how they’re destitute and their spirits are broken, and Donald and Goofy both go delirious from the hunger at one point.
Of course, after that tear jerker the typical Disney magic sets in again and the whole thing is largely played for laughs, but those first few minutes are intensely sad IMHO.
Never heard of that one, and I am sure it’s not the animation in question, but it’s an interesting suggestion nonetheless. I’ll check it out.