The hadeeth “Whoever gives food to a fasting person to break his fast…” includes both rich and poor

With regard to the hadeeth, “Whoever gives food to a fasting person to break his fast will have a reward like his without detracting from his reward in the slightest,” is what is meant by the fasting person the one who is poor? Or does that include relatives and friends? Is there the same reward for a voluntary fast if one gives food to the fasting person to break his fast?.