Mantra 4

स य एतदेवं विद्वानसाधु सामेत्युपास्तेऽभ्याशो ह यदेनं साधवो धर्मा आ च गच्छेयुरुप च नमेयुः ॥ २.१.४ ॥

In plain words

He who, knowing this, worships the Sāman as the good — swiftly indeed do good qualities come to him and bow before him.