esoteric sciences—in order to conceal it [the treasure] therewith. As the Exalted alluded to this meaning in Surah Al-Kahf by His saying: {And they found therein a wall about to collapse, so he restored it} (Al-Kahf 77).

And His saying, Glory be to Him: {And as for the wall, it belonged to two orphan boys in the city, and there was beneath it a treasure for them, and their father had been righteous. So your Lord intended that they reach maturity and extract their treasure} (Al-Kahf 82).

And know that al-Khidr (peace be upon him) did not restore the wall—the exemplar of the exoteric science—over the treasure—the exemplar of the esoteric science—except to conceal it therewith only.

He named the believers mountains. The house... The village... Gold.. Silver

And were it not for that, he [al-Khidr] would never have restored it; furthermore, it was to be a sign indicating it to his companions, and for others, a barrier and a veil preventing them from perceiving and reaching it.

The most noble master, Sheikh Ibrahim al-Tusi—may Allah sanctify him—favored us with this meaning in his 'Ayniyya [poem], saying:

As for the wall restored by al-Khidr, it is