40 is the numeration of the Arabic letter Mim (م), the twenty-fourth letter of the Arabic alphabet and the thirteenth in the abjad order. Its name derives from the Semitic root mīm, meaning “water,” and its shape (a closed circle with a tail) is thought to represent a wave or a drop. In the abjad numeral system, Mim carries the value 40, a number associated with completion, gestation, and the threshold between the material and the spiritual.

Position on the Tree of Life

40 corresponds to Path 23 on the Tree of Life, the twenty-third of the thirty-two paths. This path connects Hod (Splendor) to Malkuth (Kingdom) and is traditionally assigned to the Hebrew letter Mem (also value 40) and the astrological sign of Water. In the Arabic schema, the same path is linked to the letter Mim, reinforcing the elemental and fluidic nature of this channel—a conduit for formless potential to crystallize into physical reality.

Astrological and planetary correspondence

While the Arabic alphabet does not have a fixed astrological attribution in the same way as Hebrew, the value 40 is intimately tied to the element of Water (through the Hebrew Mem and the Arabic Mim). In the 777 system, Path 23 is governed by the zodiacal sign Pisces (the Fish), a mutable water sign ruled by Jupiter and Neptune. The number 40 thus resonates with Piscean themes: dissolution, empathy, and the boundary between the subconscious and the manifest.

Historical context

The abjad system, from which the value 40 derives, is a pre-Islamic method of assigning numerical values to Arabic letters, based on the order of the Hebrew alphabet. The letter Mim (م) occupies the same position as Hebrew Mem, and its value 40 is consistent across both traditions. In early Islamic mysticism, the number 40 appears frequently: the Prophet Muhammad received his first revelation at age 40; the Qur’an mentions 40 days as a period of purification; and Sufi retreats (khalwa) often last 40 days. The letter Mim itself is sometimes interpreted as a symbol of the divine name al-Malik (the King) or al-Mu’min (the Faithful), and its closed form is said to represent the heart’s enclosure of divine knowledge.

In the Risāla fī ḥurūf al-mu‘jam (Treatise on the Letters of the Alphabet) attributed to the Brethren of Purity, Mim is described as the “mother of letters,” a vessel for the emanation of existence. The number 40, therefore, is not merely a count but a qualitative measure—the completion of a cycle, the fullness of time, or the saturation of a vessel before transformation.

In Liber 777

At scale step 23 (Path 23), the table of Liber 777 lists the numeration of the Arabic alphabet as 40. This entry aligns the Arabic letter Mim with the same numerical and symbolic weight as the Hebrew Mem, anchoring the path’s watery, receptive nature in both linguistic systems. The value 40 here serves as a key: a numeric signature that unlocks the correspondences between letter, path, and the elemental current that flows from Hod to Malkuth.