Jami At Tirmidhi
538
Hasan Sahih+3

Abu Bakr bin Hafs - and he is Ibn Umar bin Sa'd bin Abi Waqas - narrated about Ibn Umar, that:"He went out on the day of Eid, and he did not pray before it nor after it. He mentioned that the Prophet did so

Hasan SahihAhmad Muhammad Shakir
Hasan SahihAl-Albani