DEUT588 The Talmud also distinguishes between a tzadik who is "good" and one who is not good, defining the former as one who is good to heaven and good to humanity, and the latter as one who is "good to heaven and bad to humanity" (Kiddushin 49-50). Similarly, the Sifre speaks of being "good in the eyes of heaven" and "straightforward in the eyes of man" (On this verse). All of these passages imply that the rabbis recognized a special class of mitzvot that applied bain adam le-chavero, to relations between man and his fellow man, resulting in conditions that we recognize as morally right and good (a biblical source for the distinction between duties toward God and duties toward man may be the passage in [this verse] taken in conjunction with Proverbs 3:4. See, the Sifre on [this verse] and the discussion in Sefer Hamitzvohs Hashem by J. Seif Introduction to Part 2.)