In the lighted fortnight of the month of Pausha, when the constellation Rohini is in conjunction, if one purifying himself by a bath lies, under the canopy of heaven clad in a single piece of cloth, with faith and rapt attention, and drinks the rays of the Moon, he wins the merits of great sacrifices,
पौषमासस्य शुक्ले वै यदा युज्येत रोहिणी। तेन नक्षत्रयोगेन आकाशशयनो भवेत्॥ एकवस्त्रः शुचिः स्नातः श्रद्दधानः समाहितः। सोमस्य रश्मयः पीत्वा महायज्ञफलं लभेत्॥