《南齐书·志·卷九》
《礼记》在辛日郊祭，《尚书》在丁曰祭祀，辛日丁曰都合适，应该临时谨慎选择。
《礼》以辛郊，《书》以丁祀，辛丁皆合，宜临时详择。 
"Record of Rituals" sacrifices the suburb on the Xin day, "Book of Documents" sacrifices on the Ding day, both the Xin day and the Ding day are suitable, and it should be selected with prudence.