लोकेषु पञ्चविधं सामोपासीत पृथिवी हिंकारः ।अग्निः प्रस्तावोऽन्तरिक्षमुद्गीथ आदित्य प्रतिहारो द्यौर्निधनमित्यूर्ध्वेषु ॥ १ ॥
In plain words
Meditate upon the fivefold sāman across the worlds: the earth is the opening hiṃkāra, fire is the prastāva, the intermediate space is the udgītha, the sun is the pratihāra, and the sky is the concluding nidhana—thus with respect to the higher realms.
Close to the Sanskrit
One should meditate upon the five-fold sāman in the worlds: the earth is the hiṃkāra, fire is the prastāva, the atmosphere is the udgītha, the sun is the pratihāra, the sky is the nidhanam, thus regarding the higher ones.