Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) says: I was sleeping in the month of Ramadan when it was said to me in a dream that tonight is Laylat al-Qadr. I woke up drowsily and held onto the ropes of the tent of the Messenger of Allah (peace and blessings be upon him). When I came to him, he was performing prayer. It was the twenty-third night.
Hadith Referenceالفتح الربانی / كتاب الصيام / 4039