In this allegory from Attar's Mosibat Nameh, a mad mystic questions a grocer about the nature of profit. While the grocer defines profit materially as turning one thing into two (representing worldly accumulation and multiplicity), the mystic redefines it spiritually: true profit is turning two into one (attaining Divine Unity or Tawhid). The story illustrates the contrast between the worldly pursuit of wealth and the mystical pursuit of oneness with the Divine.