कर्माणि कारयामासु: पुरस्कृत्य प्रजापतिम् ॥ १३ ॥
karmāṇi kārayām āsuḥ
When the great sages saw the Lord as the brahmacārī-dwarf Vāmana, they were certainly very pleased. Thus they placed before them Kaśyapa Muni, the Prajāpati, and performed all the ritualistic ceremonies, such as the birthday ceremony.
According to Vedic civilization, when a child is born in the family of a brāhmaṇa, the birthday ceremony, known as jāta-karma, is first performed, and then other ceremonies are also gradually performed. But when this vāmana-rūpa appeared in the form of a vaṭu, or brahmacārī, His sacred thread ceremony was also performed immediately.