Sayyiduna Jabir (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) performed the aqiqah for Sayyiduna Hasan and Sayyiduna Husayn (may Allah be pleased with them both) on the seventh day and circumcised them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17563