In Tamil Nadu, the texts are mainly written in Vatteluttu,which was an abugida script used to write Tamil up until the 12th century CE. The content of the manuscripts is often attributed to the Vedic sage Agastya who is believed to have possessed a highly developed consciousness. These ancient records of providence were made famous by practitioners around the Vaistheeswaran temple in the state of Tamil Nadu.First, the Nadi palm leaves are located based on thumb impressions (right for men, left for women). 

These Nadi leaves were initially stored on the premises of Thanjavur’s Saraswati Mahal Library  in Tamil Nadu.The British colonialists later showed interest in the Nadi leaves concerned with herbs and medicine, future prediction, etc.Some leaves got destroyed, and the remaining were auctioned during the British Raj (rule).These Nadi leaves were obtained by the families of astrologers at the Vaitheeswaran Temple and have been passed down the years from one generation to the other.

There is also another set of astrologers claiming that the content written on the palm leaf is the conversation between Shiva and Parvathi. This is called “Shiva nadi jyotisiyam”.