Manusmriti

siva.sh/manusmriti/5/70

नात्रिवर्षस्य कर्तव्या बान्धवैरुदकक्रिया । जातदन्तस्य वा कुर्युर्नाम्नि वाऽपि कृते सति ॥ ७० ॥

sanskrit

The relatives shall not offer libations to (a child) that has not reached the third year; but if it had teeth, or the ceremony of naming it (Namakarman) had been performed, (the offering of water is) optional.

english translation

nAtrivarSasya kartavyA bAndhavairudakakriyA | jAtadantasya vA kuryurnAmni vA'pi kRte sati || 70 ||

hk transliteration by Sanscript