PANCHIKARAN Adi Shankara wrote a treatise on this theory, titled – Pancikaranam,[1] which was elaborated by his disciple Sureshvaracharya, and later on commented upon in 2400 slokas by Ramananda Saraswati, disciple of Ramabhadra, and in 160 slokas by Ananda Giri, disciple of Suddhananda Yati.[2][3]