IslamWay Wishes the all muslims a happy Eid
It was narrated in the Musannaf of Ibn Abi Shaybah with a saheeh isnaad from Ibn Mas'ood (may Allaah be pleased with him) that he used to recite takbeer during the days of tashreeq:
Allaahu akbar, Allaahu akbar, laa ilaaha ill-Allaah, wa Allaahu akbar, Allaah akbar, wa Lillaah il-hamd (Allaah is Most Great, Allaah is most Great, there is no god but Allaah, Allaah is Most great, Allaah is most great, and to Allaah be praise).
It was narrated that al-Waleed ibn Muslim said: "I asked al-Awzaa'i and Maalik ibn Anas about saying Takbeer out loud on the two Eids. They said: Yes, 'Abd-Allaah ibn 'Umar used to say it out loud on the day of al-Fitr until the imam came out (to lead the prayers)".