Brahmanda Purana
The Adhyatma-ramayana, the most important embedded set of chapters in the extant versions of the Purana, is considered to have been composed centuries later, possibly in the 15th-century, and is attributed to Ramananda – the Advaita scholar and the founder of the Ramanandi Sampradaya, the largest monastic group in Hinduism and in Asia in modern times. The Adhyatma-ramayana thus was added to this Purana later, and it is an important document to the Rama-related tradition within Hinduism.