Mantra 8

अथ खल्वाशीःसमृद्धिरुपसरणानीत्युपासीत येन साम्ना स्तोष्यन्स्यात्तत्सामोपधावेत् ॥ १.३.८ ॥

In plain words

Now the prospering of prayers, and the approaches. Let a man take refuge in the Sāman with which he is about to sing praise.