Nafi' narrates from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that he used to say the takbir on the night of Eid al-Fitr and while going out (to the prayer ground). The mention of the night in it is gharib (unusual).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب صلاة العيدين / 6128