For a standard passport application, you do not need the infant's Aadhaar card; a birth certificate and the parents' passports are sufficient. However, if you are applying under the 'Tatkal' (expedited) category, the passport office may require the baby's Aadhaar card as part of the documentation. It is highly recommended to ensure that both parents' passports are updated with the correct current address to facilitate a smooth police verification process.