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## Third Section: The Cause of Water Increase
They say that these great oceans are divided into three parts, namely, the lower part, the middle part, and the upper part. These three parts are each thirty-three thousand three hundred thirty-three yojanas and one-third yojana (333333) in thickness.
In the lower part, there is only air. In the middle part, there is both air and water. In the upper part, there is only water.
Similarly, in the salt ocean, there are seven thousand eight hundred and eighty-four yojanas of water surrounding the earth.
Now, in the lower and middle parts of these great oceans and small oceans, many winds arise, they gather, they rise, they move, they shake, they roar, they thunder, they roar, they change their state. Due to this, the water level rises.
But when in the lower and middle parts of these great oceans and small oceans, many winds do not arise, and they do not change their state, then the water level does not rise.
Similarly, if the winds rise, the water level rises. If the winds do not rise, the water level does not rise.
Thus, O Gautama! In the salt ocean, the water level increases and decreases on the fourteenth, eighth, new moon, and full moon days.
## Explanation of the Cause
O Bhagavan! What is the reason for the water level of the salt ocean increasing and decreasing on the fourteenth, eighth, new moon, and full moon days?
O Gautama! In the four directions of the Jambudvipa island, beyond the outer Vedicant, at a distance of ninety-five thousand yojanas in the salt ocean, there are four very large Mahapatala Kalashas, shaped like a great pitcher. Their names are Valayamukha, Keyupa, Yupa, and Ishvara.
These Patala Kalashas are one hundred thousand yojanas deep in the water. Their diameter at the base is ten thousand yojanas. From there, they gradually widen, reaching a width of one hundred thousand yojanas in the middle. Then, they gradually narrow again, reaching a width of ten thousand yojanas at the mouth.
The walls of these Patala Kalashas are uniform throughout. They are all one thousand yojanas thick. They are entirely made of vajra-ratna (diamond), as clear as the sky and crystal, and are perfectly symmetrical.
Within these walls, many living beings are born and die. Many pudgalas (matter particles) gather and disperse. There is a constant cycle of creation and destruction of pudgalas.
These walls are eternal according to the Dravyarthik Nay (principle of substance), and they are imperishable according to the Paryaya Nay (principle of modification).
In these Patala Kalashas, there reside four great Dikpala Devas (guardian deities) who are in the state of Palyopama (supreme bliss). Their names are Kal, Mahakal, Velamb, and Prabhanjan.
These Mahapatala Kalashas are divided into three parts: 1. The lower part, 2. The middle part, and 3. The upper part. Each of these parts is thirty-three thousand three hundred thirty-three yojanas and one-third yojana (333333) thick.
In the lower part, there is only air. In the middle part, there is both air and water. In the upper part, there is only water.
The water level of the salt ocean increases and decreases due to the winds arising in the lower and middle parts of these Mahapatala Kalashas. When the winds arise, they push the water upwards, causing the water level to rise. When the winds do not arise, the water level remains stable.
This is the reason why the water level of the salt ocean increases and decreases on the fourteenth, eighth, new moon, and full moon days.