It was spoken by Yamarāja to the servants who went to take Ajāmila to hellish condition of life and he was saved by the Viṣṇudūta. Because at the end of his life he chanted "Nārāyaṇa." Actually, Nārāyaṇa was his youngest son, and he was very much attached to the little boy. So when Yamadūta in ferocious feature came to take him, he became too much afraid, and because he was accustomed to his son, Nārāyaṇa, so out of fear he chanted very loudly, "Nārāyaṇa, please come. Who are these men?" So simply by chanting "Nārāyaṇa," immediately from Vaikuṇṭha the servants of Nārāyaṇa came, and they saved him from the hands of Yamadūta. That will be explained in the Sixth Canto how simply by chanting the name of the Supreme Personality of Godhead at the end of life, ante nārāyaṇa smṛtiḥ (SB 2.1.6), that is the perfection of life. If at the end of life you can remember Nārāyaṇa, then life is successful. You go back to home, back to Godhead.
So the real purpose is that we should give up this asat-patha. You sit properly, it is not... Asat-patha and sat-patha. Here it is said sat-patham. Sat-patham means our permanent goal of life. We are now interested with nonpermanent goal of life. People are thinking, "If I get a nice car, a nice apartment, a nice wife, a nice bank balance, then I will be happy." But this is asat, because none of this will stay. The bank balance also will not stay, the wife also will not stay, and good position, that will not... As soon as the body is finished, everything is finished. Therefore they are called asat. Narottama dāsa Ṭhākura has sung, sat-saṅga chāḍi'kainu asate vilāsa, te-kāraṇe lāgila mor karma-bandha-phāṅsa. Sat-saṅga. Sat-saṅga means persons who are making progress towards the permanent life. They are called sat. Just like this Kṛṣṇa consciousness movement. This movement means we are training our disciples how to make progress towards permanent life. And the material world means they are making progress towards nonpermanent life. So those who are intelligent, they are not interested in nonpermanent life. And those who are foolish, mūḍha, they are interested in this temporary life, and they do not know what is there after death, neither they have got any knowledge what is spirit, what is matter. Ignorance. In darkness.