Mantra 8

अथैतयोः पथोर्न कतरेणचन तानीमानि क्षुद्राण्यसकृदावर्तीनि भूतानि भवन्ति जायस्व म्रियस्वेत्येतत्तृतीयंस्थानं तेनासौ लोको न सम्पूर्यते तस्माज्जुगुप्सेत तदेष श्लोकः ॥ ५.१०.८ ॥

In plain words

But by neither of these two paths do those small creatures go, which turn round again and again, of whom it is said, "Be born and die." That is the third state. Therefore that world yonder is not filled up. Let a man therefore be wary. On this there is this verse: