St. Isidore and the Miracle of the Spring

18th century
Church of Santa María al Paradiso, Milan, Italy

According to the saint's master, Juan Vargas, he mentioned to Isidore that he was thirsty and the latter simply struck the ground with his ox goad and water sprang forth. This is depicted in the foreground of the painting. In the background the yoked oxen serve the dual purpose of clarifying that the thing in Isidore's hand is an ox goad and also referring to the other, more famous miracle by which an angel did the saint's plowing for him so he could attend Mass.

Read more about images of St. Isidore the Laborer.

Source: this page at Wikimedia Commons.