Ibn Abi Umayr, from Hisham ibn al-Hakam, from Abu Abdillah عليه السلام, peace be upon him:
Imam عليه السلام said: “The Night of Qadr is in every year, and its day is like its night.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 4, p. 413