法苑珠林 4.61

4.61

依起世經云。於世間中有四種雲。一白二黑三赤四黃。此四雲中若白色雲者。多有地界。若黑色雲者。多有水界。若赤色雲者。多有火界。若黃色雲者。多有風界。有雲從地上昇在虛空中一俱盧奢。二三乃至七俱盧奢住。或復有雲上虛空中一由旬。乃至七由旬住。或復有雲上虛空中百由旬。乃至七百由旬住。或復有雲從地上虛空千由旬。乃至七千由旬住。乃至劫盡。長阿含經云。劫初時有雲得至光音天（依經雲亦多種。或有五色慶雲而現。或有赤雲黑雲種種而現不可盡說。備如仁王經等具述）。

According to the Lokotpatti-sūtra: There are four kinds of clouds in the world: first, white; second, black; third, red; fourth, yellow. Among these four clouds, if it is a white cloud, it has an abundance of the earth element; if it is a black cloud, it has an abundance of the water element; if it is a red cloud, it has an abundance of the fire element; if it is a yellow cloud, it has an abundance of the wind element. There are clouds that rise from the earth and abide in the sky at one krośa, two, three, up to seven krośas; or there are clouds that ascend into the sky and abide at one yojana up to seven yojanas; or there are clouds that ascend into the sky and abide at a hundred yojanas up to seven hundred yojanas; or there are clouds that ascend into the sky from the earth and abide at a thousand yojanas up to seven thousand yojanas, even until the end of the kalpa. The Dīrgha-āgama says that at the beginning of the kalpa there were clouds that could reach the Ābhāsvara Heaven. (According to the sūtras, clouds are of many kinds: sometimes auspicious five-coloured clouds appear, or red clouds and black clouds appear in various forms that cannot be exhaustively described, as fully recorded in the Kāruṇikarājā-sūtra and others.)