《明史·志·卷十三》
十五年秋，太祖认为西域推算天象最精确，其五星纬度中国又役有，就命令翰林李种、昊伯宗和回回大师马沙亦黑等翻译这本书。《回回历法》不用闰月，以三百六十五日为一年。每年分十二宫，有的宫内有闰日，大凡一百二十八年宫闰三十一日。以三百五十四日为一周，每周十二个月，有的月有闰日，大凡三十年月闰十一日。
以三百五十四日为一周，周一十十月有闰日。凡有闰闰凡百二十八年而而宫闰三十一日，以三百五十四日为一周，周十二月，月有闰日。
In the autumn of the 15th year, the Emperor Taizu, convinced that astronomical calculations from Western regions were the most accurate, and that the five planetary positions in China have descendants, ordered the translation of this book by Hanlin Academy's Li Zhong, Hao Bozong and Huihui (Muslim) scholar Ma Shayihe. The "Huihui Calendar" does not utilize intercalary months, and designates a year to be 365 days. Each year is divided into twelve palaces, and some palaces include intercalary days, with intercalary 31 days approximately every 128 palaces. A week is designated as 354 days, with twelve months in a week; and some months include intercalary days, with intercalary 11 days approximately every 30 months.