This material world is temporary. And sat means spiritual. So sat-saṅga means spiritual association. Sat-saṅgān mukta-duḥ-saṅgaḥ. The more you associate with sat, with devotees, then you become, more you become liberated. Sat-saṅgān mukta-duḥ-saṅgaḥ. Duḥ-saṅga. We are in the material world, we are simply in association, bad association, duḥ-saṅga. So if we want to get rid of this bad association, we must associate with the devotees. Sat-sangat mukta duhsanga.