अथ यदि सामतो रिष्येत्स्वः स्वाहेत्याहवनीये जुहुयात्साम्नामेव तद्रसेन साम्नां वीर्येण साम्नां यज्ञस्य विरिष्टं संदधाति ॥ ४.१७.६ ॥
In plain words
And if it is harmed on the side of the Sāman, let him offer in the offering fire with "svaḥ, svāhā." Thus by the very essence of the chants of the Sāman, by their strength, he mends the harm done to the sacrifice on the side of the Sāman.