Mantra 22

हिरण्मयी अरणी याभ्यां निर्मन्थतामश्विनौ ।तं ते गर्भं हवामहे दशमे मासि सूतये ।यथाग्निगर्भा पृथिवी यथा द्यौरैन्द्रेण गर्भिणी ।वायुर्दिशां यथा गर्भ एवं गर्भं दधामि तेऽसाविति ॥६,४.२२ ॥

In plain words

"The two golden fire-sticks with which the Aśvins churn out the fire — that germ we call for thee, to be brought forth in the tenth month. As the earth holds fire within her, as the sky is with child by Indra, as the wind is the germ of the quarters, so do I lay the germ in thee, N."