5.2. 'The Second Day' of Creation (al-ithnayn, Monday):
Ibn Arabi says that 'the motion of Monday was created from the (divine) Attribute of "The Living One" (al-Hayy), and through it life was in the world, so everything in the world is living (i.e. starts to become living, on Monday)' [II.438.9]. Then he explaines that the moon, which corresponds to the 'Second Day' of Creation, is in the first celestial sphere above the earth:
And the divine Name 'The Clarifying One' (al-Mubin) was intent on bringing into existence this lowest heaven and its planet (the moon) on the Second Day, in the (lunar mansion) of Iklil ('the Crown', which is the seventeenth station of the twenty eight lunar stations), and the letter dal ( ) is from the motion of this orb.
[II.445.30]
The moon is the fastest moving planet in the heavens, moving through one lunar mansion every day, so it goes through all twenty-eight lunar mansions in its day, which equals twenty eight earth days (according to Ibn Arabi, as explained in section 2 above). Ibn Arabi explains that from this motion the twenty-eight letters of the alphabet are created, regardless of how they are written or spoken in different languages [II.448.4] (i.e. the sounds). Allah made this first (lowest) heaven the place for the first prophet Adam, since he is the (first manifestation or exemplar of) the Perfect Human Being.
The moon in keeping with its association with Adam (the emblematic human being) resembles the soul [I.499.5], and it is the second state of the appearance of the Single Monad, after the creation of the spirits (angels), which are purely spiritual creatures. That is why Adam himself lectured Ibn Arabi about the directions when he visited him in the orb of the moon (Al-Tanazzulat Al-Mawsiliyya: 261) because through the creation of his Day (Monday) the space and the six directions started to form.