Musar do Królów I 3:11

The tenth quality: The love of the pious man for God, blessed be He, is not dependent upon anything or given in order to receive a reward. And because Abraham sought no reward for his service to God, therefore God, blessed be He, said to him (Genesis 15:1), “Thy reward shall be exceedingly great.” For such is the way of God, blessed be He, with His pious ones. When they serve Him, not for the sake of receiving a reward, He doubles their reward and gives them a double portion of goodness. As He said to King Solomon, peace be upon him, (1 Kings 3:11), “Because thou hast asked this thing, and hast not asked for thyself long life, neither has asked riches for thyself.” And it is written after this (ibid., 3:13), “And I have also given thee that which thou has not asked, both riches and honor.”