Aima (Hebrew AIMA, “mother”) is the maternal principle in Kabbalistic thought associated with Binah, the third Sephirah in the Tree of Life, and paired with Abba, “father,” an aspect of the second Sephirah Chokmah. Some Kabbalistic writings distinguish Aima, the bright fertile mother, and Ama, the dark sterile mother. Such distinction is incorporated in the gematria
since the values of the letters in Aima add to fifty-two equaling the value of Ben, “son,” while those of Ama add to forty-two, a number associated with severity. A.G.H.
Greer, John Michael. The New Encyclopedia of the Occult. St. Paul. MN. Llewellyn Worldwide. 2005. p. 9