The Simpsons (1989)

S23E12 Moe Goes from Rags to Riches

Moe reveals that his bar rag has an unusual backstory, having originated as a medieval tapestry over a thousand years ago. Meanwhile, Bart makes an effort to mend his friendship with Milhouse. When Moe's beloved rag goes missing, he comes to a profound realization about the importance of friendship in his life.