What sandy jenkins give Douglass?

A root that will keep him safe if held on his right side.(who ever wrote this they ONLY GAVE HALF THE ANSER)

that is wrong!(if you know its wrong then why dont you improve it?)

Douglass returns to the woods, where he runs into Sandy Jenkins, a slave from a neighboring farm. Sandy is traveling to the home of his free wife, and he invites Douglass to come. At the house, Douglass explains his troubles to Sandy. Sandy advises Douglass to carry a certain magical root from the woods, explaining that the root will save him from white men's beatings. Douglass is skeptical, but then decides it cannot hurt to try.