Sayyidah Umm Kurz al-Khuza'iyyah (may Allah be pleased with her) heard the Prophet (peace and blessings be upon him) saying about the aqiqah: "Two equal goats for a boy and one goat for a girl; it will not harm you whether they are male or female."
Sufyan bin Uyaynah narrated it this way, "from his father," and the mention of his father in it is an error (wahm).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19276