Musar su Proverbi 19:14

But if we reflect further, we see the greatness of the goodness of the Holy One Blessed be He, that the punishment itself results in great good. For a place was prepared for her to restore her tranquility and to sustain her old age. For in the death of the wife of Boaz, it was ordained by Heaven that he marry Ruth, as it is written (Mishlei 19:14): "And from the L-rd, an understanding wife." And through this Oved was born to her, who, as it is known, was Machlon, as the Kabbalists wrote, wherefore it is written (Ruth 4:17): "A son was born to Na'ami" [(and not "to Ruth," Machlon having been the son of Na'ami [viz. Ibid. 1:2])]. In sum, a man must believe that "from the mouth of the Almighty evil does not emerge, and if suffering does result we must know that good lies in it.

When the author of this prayer speaks about the נבונים, this is a reference to the matriarchs; a mother is compared to someone with בינה. We are told in Berachot 57a that if someone dreams that he has slept with his mother he may look forward to insights and understanding. Our Kabbalists refer to בינה, insight, as אימא עילאה, "Mother Superior."