Abu Dawud Book 2, Hadith Number 1382.
Chapter : The view that lailat alqadr is in the whole of ramadhan.
Narated By ‘Abd Allah b. ‘Umar : The Apostle of Allah (PBUH) was asked about lailat al-qadr an I was hearing. He said: It is during the whole of Ramadhan.
Abu Dawud said: Sufyan and Shu’bah narrated this tradition from Abu Ishaq as a statement of Ibn ‘Umar himself; they did not transmit it as a saying of the Prophet (PBUH).