釋氏要覽 2.107

2.107

The Mahāsāṃghika-vinaya says: 'When monks built rooms and wished to paint the walls, the Buddha said: "I permit painting such things as mountain forests, humans, and horses; one must not paint depictions of men and women in sexual union."' ○ Formerly, Prince Wenxuan of Jingling of the Southern Qi painted likenesses of former worthies on the walls of his study, making it as if he were facing deities; among them were likenesses of heroic women. A guest at the time said: 'Your painting of heroic women seems to be a liking for sex rather than a liking for virtue.' Wenxuan then scraped them off and apologized. A secular residence avoiding suspicion was still like this!