Nanda Maharaja could understand that Gargamuni had come for this purpose and that his own duty now was to act according to Gargamunis advice. Thus he said, Please tell me what is my duty. This should be the attitude of everyone, especially the householder. The varnasrama society is organized into eight divisions: brahmana, ksatriya, vaisya, sudra, brahmacarya, grhastha, vanaprastha and sannyasa. Nanda Maharaja represented himself as grhinam, a householder. A brahmacari factually has no needs, but grhi, householders, are engaged in sense gratification. As stated in Bhagavad-gita (2.44), bhogaisvarya-prasaktanam tayapahrta-cetasam. Everyone has come to this material world for sense gratification, and the position of those who are too attached to sense gratification and who therefore accept the grhastha-asrama is very precarious. Since everyone in this material world is searching for sense gratification, grhasthas are required to be trained as mahat, great mahatmas. Therefore Nanda Maharaja specifically used the word mahad-vicalanam. Gargamuni had no interest to serve by going to Nanda Maharaja, but Nanda Maharaja, as a grhastha, was always perfectly ready to receive instructions from a mahatma to gain the real benefit in life. Thus he was ready to execute Gargamunis order.