...The issue of raising graves and building upon them, as people do by constructing mosques and domes over graves. We say: Know that people, both past and present, from the earliest to the latest, from the time of the Companions (raḍiya Allāhu ʿanhum) until now, have agreed that raising graves and building upon them is an innovation among the innovations that have been prohibited, and the warning of the Messenger of Allāh against those who do it is severe, as will be explained. No one among all the Muslims has disagreed on this. However, it occurred to Imām Yaḥyá ibn Ḥamzah to express an opinion indicating that he saw no harm in domes and shrines over the graves of the virtuous. No one else has said this, nor has it been narrated from anyone else. Those authors who mentioned it in the books of fiqh among the Zaydīs did so following his opinion and emulating him. We did not find this opinion among his contemporaries or those before his time, neither from the Ahl al-Bayt nor from others. Similarly, the author of "al-Baḥr," who is a teacher of the senior Zaydīs and a reference for their school of thought, and a place for clarifying their internal disagreements and their disagreements with others, included the majority of the opinions of the mujtahids and their disagreements in fiqh issues. It has become the reference in these times and lands for those who wish to know the disagreements in issues and the statements of those who affirm them or..