Upadēśa Kaliveṇbā: the extended version of Uḷḷadu Nāṟpadu

Sri Muruganar had collected twenty-one verses that Bhagavan had composed on various occasions, and in July 1928 he asked Bhagavan to compose some more verses in order to form a work of forty verses (like four ancient Tamil poems each of which consisted of forty verses, namely Iṉṉā Nāṟpadu, Iṉiyavai Nāṟpadu, Kār Nāṟpadu and Kaḷavaṙi Nāṟpadu) elucidating the nature of reality and the means to attain it. Accordingly on the 21st July 1928 Bhagavan began to compose more verses on this subject, and in order to arrange them into a logical order and to form them into coherent text, he and Muruganar would discuss in detail the progress of the work, where gaps needed to be filled, and which of the original twenty-one verses should be retained and which discarded.