A brisk bit of haggling in rhyme: a lame mare, a market to catch, and money that suddenly cures the limp. It is an old English saying turned into six lines, and the twist at the end rewards a knowing little laugh.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
"Lend me thy mare to ride a mile."
"She is lamed, leaping over a stile."
"Alack! and I must keep the fair!
I'll give thee money for thy mare."
"Oh, oh! say you so?
Money will make the mare to go!"
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition