पुरा प्रातरनुवाकस्योपाकरणाज्जघनेनगार्हपत्यस्योदङ्मुख उपविश्य स वासव५सामाभिगायति ॥ ३ ॥
In plain words
Before the morning recitation begins, sitting behind the householder's fire facing north, he sings the vāsava sāman.
Close to the Sanskrit
Before the commencement of the morning recitation, seated behind the householder's fire facing north, he chants the vāsava sāman.