The Long Āgama Sūtra 30.29

30.29

佛告比丘：「雪山右面有城，名毗舍離，其城北有七黑山，七黑山北有香山，其山常有歌唱伎樂音樂之聲。山有二窟，一名為晝，二名善晝，天七寶成，柔濡香潔，猶如天衣，妙音乾闥婆王從五百乾闥婆在其中止。晝、善晝窟北有娑羅樹王，名曰善住，有八千樹王圍遶四面。善住樹王下有象王，亦名善住，止此樹下，身體純白，七處平住，力能飛行，其頭赤色，雜色毛間，六牙纖𦟛，金為間填，有八千象圍遶隨從；其八千樹王下八千象，亦復如是。

The Buddha told the monks, “On the right side of Mount Himavat, there’s a city named Vaiśālī. That city has seven black mountains to its north. North of those seven black mountains, there’s a fragrance mountain. There are always sounds of music and singing at that mountain. It has two caves: One is called Painted and the second is called Skillfully Painted. They’re made of seven heavenly treasures that are soft and pleasant smelling like heavenly cloth. The Gandharva King Sarasvatī lives there with 500 gandharvas.

“North of the caves Painted and Skillfully Painted is a sal tree king named Susaṃsthita. It’s surrounded on four sides by 8,000 other tree kings. An elephant king lives under the tree king Susaṃsthita that’s also named Susaṃsthita. His body is all white, he stands flush in seven places, and he has the ability to fly. His head is red and his hair is multicolored. His six tusks are delicate, and there’s gold between them. He’s surrounded by 8,000 elephants that follow him. Those 8,000 elephants live under the 8,000 other tree kings in the same way.