Those who know this always offer oblations of water with rapt attention to the departed Manes. Every fortnight, on the day of the New Moon, one should make offerings to his departed ancestors.
सदा नावि जलं तज्ज्ञाः प्रयच्छन्ति समाहिताः। मासार्धं कृष्णपक्षस्य कुर्यान्निर्वपणानि वै॥