It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Every child is born upon the fitrah (natural disposition)."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Ibn Jurayj except al-Harith bin Ghassan; Umar bin Yahya is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 5350
Hadith Takhrij«أخرجه البزار فى «مسنده» برقم: 5185، والطبراني فى «الأوسط» برقم: 6134»