The rib surgery of man that created the woman and the extra intellect given to Rosh Hashanah:[1]
Scripture relates that G-d placed Adam to sleep and built his wife from his rib bone. The sages learned based on this that G-d gave extra understanding [i.e. Bina] to the woman. Mystically, this statement relates to the holiday of Rosh Hashanah. Normally, the level of Malchus of Atzilus receives its intellect through the attributes of Z”a. The novelty on Rosh Hashanah is that the level of Malchus of Atzilus receives intellect from the level of Bina directly from the level of Chabad, bypassing the level Z”a. This is the mystical concept of the Nesira, which refers to the removal of Z”a from the process of sending the intellect to the level of Malchus. This is in contrast to every other holiday in which the new revelation that it receives from the intellect of Chabad comes through the level of Z”a.
[1] Likkutei Torah p. 42a