Ulladu Narpathu by Shri V. Krithivasan at SF Bay Area Satsang : Bhagavan Sri Ramana Maharshi

Once Bhagavan composed twenty Tamiḷ stanzas containing his important teachings. They were not written in any particular order to form a poem. Sri Muruganar, therefor suggested that Bhagavan should write twenty stanzas more to make the conventional forty. Accordingly Bhagavan composed twenty more stanzas. Out of these forty stanzas Kavyakantha Ganapati Muni selected two as the invocatory stanzas. Then Bhagavan wrote two more to complete the forty. Some of the stanzas were translations from Sanskrit, but as devotees wanted all the forty verses to be original they were eliminated and new stanzas