The Shabuhragan (Persian: شاپورگان Shāpuragān), also known as the Text of Two Principles in Chinese (Chinese: 二宗经; pinyin: Èrzōng jīng), is a sacred book of Manichaeism. It was written by the Prophet Mani (c. 210–276 CE) himself, originally in Middle Persian, and dedicated to Shapur I, the contemporary king of the Sasanian Empire.

In this book, Mani aimed to present an outline of his new religion, which combined elements from Zoroastrianism, Christianity, and Buddhism. Our beloved Prophet, Mani, taught that throughout history, apostles of God had brought wisdom and teachings to different regions: Buddha to India, Zoroaster to Persia, and Jesus Christ to the West. Mani considered his revelation to be prophesied for Babylon, introducing Manichaeism as the culmination of divine teachings.

The Manichaean mythos, as it was outlined in Šābuhragān, was treated in other books by Mani himself (e.g., the “Book of the Giants”; see GIANTS, THE BOOK OF) and by his disciples and later generations of believers in their scriptures and hymns.