which was composed in 1280 CE, similarly he has also written a Sanskrit version of it known as Drushtantastotram. Nagadevacharya as the first chief acharya of Sampradaya, encouraged many of his disciples and companions to compose treatise on the teachings of Sarvajna Chakradhara. memoirs of Nagadeva were compiled by Narendra, Malobas and Parasrambas in 1312 CE, they are known as Smrutisthala. Baidevabas wrote Pujavasara which describes the daily routine of Chakradhara. In this manner, the seven works have been written, which are known as Sati Grantha and they are accepted by the follower of the sect. These works and their writers are: Narendra : Rukminiswayamvara (1292 CE) Bhāskarabhatta Borikar : Shishupalavadha (1312 CE) Bhāskarabhatta Borikar : Uddhavagita (1313 CE) Damodara Pandita : Vachhaharana (1316 CE) Ravalobas : Sahyadrivarnana (1353 CE) Narobas Bahahaliye : Ruddhipurvarnana (1418 CE) Vishwanatha Balapurkar : Jnanaprabodha (1418 CE). Narendra and his brothers, Sala and Nrusinha were the court poets of Ramadevarao Yadava. Damodara Pandita and Bhaskarabhatta Borikar (Kavishwarabas) were one of the earliest Mahanubhava poets. Mahadamba (also known as Mahadaisa) was the leading poetess of Sampradaya and she is considered as first known poetess in Marathi language of the 13th century. Mahanubhava poetry is rich of various styles and metres. Many Mahanubhava poets have composed their works in Sanskrit as well. During the later period, Hayagrivacharya wrote Gadyaraja based on the 'Dashama Skandha' of Bhagavata. Pandita Bhishmamuni wrote the oldest available grammar of Old Marathi language known as Panchavartika in 14th century. Nyayabas wrote Hetusthala (purpose of the deeds) on Lilacharitra and Bhishmacharya Vaindeshkar wrote Niruktashesha describing Prasanga Mahatmya in Lilacharitra during the second half of 14th century. Itineraries like Sthanapothi and Tirthamalika were composed between 14th and 15th centuries. A Gujarati acharya called Gurjara Shivabas compiled 3 commentaries on Siddhanta Sutrapatha during 15th century; their names are Acharasthala, Vicharasthala and Lakshanasthala. He also wrote Mahavakyaprameya and Thorli Prasadaseva. Songobas (Sangapala), nephew of Gurjara Shivabas wrote Anvayasthala describing the history of Mahanubhava tradition till his era with the help of Siddhante Haribas. Medieval Mahanubhava writers composed many prose works and philosophical texts in Marathi language. Chalhana, one of the most prominent Mahanubhava writers of 15th century wrote the masterpieces like Sattvanuvada, Jnanaprakasha and Shastrasambodhini Tika. His desciple Nrusinha Pandita wrote Sanketagita. Anantamuni Karanjkar aka Aemuni, who was from Kavishwar Amnaya (lineage) composed most celebrated Vruddhachara (reminiscences) of Sampradaya. Further, many Mahanubhava philosophers wrote commentaries on Siddhanta