Right then: (Jon. 1:5)... and Jonah descended to the lower parts of the ship... – this is the Lower Shekhinah, of which it is stated: (Ruth 3:7)... and she uncovered his feet and she lay down – she lay down in the dust. And this is: (Jon. 1:5)... and he lay down and he slept. And why did She fall? Because the spirit∞ru-ḥa had flown up from Her, which is the Middle Pillar that was supporting Her, and She fell.
And at that time, it is stated of Her: (Lam. 1:1) How She sits alone... And what has caused Her descent? It is because Israel have neglected Torah and precept.