The chancellery letters reported by later sources were often altered. These letters have been preserved and transmitted to us following a threefold process of selection, fragmentation and modification. Among the victory letters produced by the Almohad chancellery is the one written by Ibn ʿAṭiyya (516/1123-553/1158) informing the ruler Abd al-Mumin of Abū Ḥafṣ al-Hintī’s victory over the rebel ʿUmar al-Massī (541/1148). Presented in the sources as a model, this letter was nevertheless taken up by chroniclers, geographers or anthologists subsequent to the Almohad dynasty, it was reworked, rewritten by deleting words and phrases or adding to them. But beyond the errors of copying, the fact of including or not including certain words in the manuscript is a choice made by the author, which makes sense. These changes are not numerous, but they open the way to other interpretations of the event history and ideology of the Almohad movement and bear witness to the desire of these authors to add their own touch to the history and literature of the Ancients, so much so that the transformations reflect their respective literary, dogmatic or psychological concerns. Thus, the anthology of the Iḥāṭa tackles the dogmatic substance of the letter, while the Rawḍ embellishes its literary character and the most recent chronicle, the Istiqṣā, reacts to the “Shiite” tendencies of the document.