The cow chews on the tough cud, and the merchant weighs with utmost care: now, roll the bidis!

This couplet paints a vivid picture of two distinct acts. First, we imagine a cow diligently chewing on dry, tough leaves, a simple act of sustenance. It highlights how life finds a way to make use of what's available. Then, the scene shifts to a merchant meticulously weighing items on a scale, valuing every tiny bit with precision. This contrast beautifully illustrates the difference between basic consumption and the careful calculations of commerce. The concluding phrase, 'Roll bidis, oh!', connects these observations to the practical task of making bidis, which involves both leaves and precise measurement for trade, a charming commentary on everyday life.