Rudra-prasava-varṇana
The Manifestation and Naming of Rudra / Nīlalohita
पीयते ऽसौ यथाकालं विबुधैः पितृभिः सह / महादेवो ऽमृतात्मा स चन्द्रमा अम्मयः स्मृतः
pīyate 'sau yathākālaṃ vibudhaiḥ pitṛbhiḥ saha / mahādevo 'mṛtātmā sa candramā ammayaḥ smṛtaḥ
In due season that Candra is drunk by the gods together with the Pitṛs. Mahādeva, whose very essence is amṛta, is that Moon—remembered as filled with nectar.