Takbir during the days of Tashriq

It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) said: "There are no days in which deeds are more beloved to Allah Almighty than these days, that is, the ten days of Dhu al-Hijjah. So increase greatly in them the takbir (Allahu Akbar), the tahlil (La ilaha illallah) and the tahmid (praise of Allah)."

Mujahid heard a man saying the takbir during the ten days and said: Why did he not raise his voice? I have certainly seen those people when one of them would say the takbir in the mosque and the whole mosque would reverberate with it. Then the sound would go out to the people of the valley until it reached al-Abtah, and al-Abtah would reverberate with it, and the source of it all was that one man.

Shu'bah said: I asked al-Hakam and Hammad about the takbirs during the ten days. They both said: It is an innovation (it has no basis).