Manava Dharmashastra 2.29

2.29

prāṅ nābhivardhanāt puṃso jātakarma vidhīyate
mantravat prāśanaṃ cāsya hiraṇyamadhusarpiṣām //

Before the navel-string is cut, the Gatakarman (birth-rite) must be performed for a male (child); and while sacred formulas are being recited, he must be fed with gold, honey, and butter.