Musannaf Ibn Abi Shaybah 5746 — Takbir when going out to Eid

Al-Zuhri said: On the day of Eid, people used to say the takbir from leaving their homes until they reached the Eid prayer ground and until the imam came out. When the imam came, they would fall silent, and when the imam said the takbir, they too would say the takbir.