89:2Al-Fajr

The month (of Ramadan) is thus and thus, and thus. i.e. ten, ten and nine.

Seek the time of Lailat-ul-Qadr in the last (ten nights), or he said: in the last nine (nights).

I see that your dreams agree regarding the last ten (nights of Ramadan). So seek it on an odd number (of these ten nights).

'A'isha (Allah be pleased with her) reported that when the last ten nights began Allah's Messenger (ﷺ) kept awake at night (for prayer and devotion), wakened his family, and prepared himself to observe prayer (with more vigour).

I used to devote myself (observe i'tikaf) during these ten (nights). Then I started devoting myself in the last ten (nights). And he who desires to observe i'tikaf along with me should spend the night) at his place of i'tikaf. And I saw this night (Lailat-ul-Qadr) but I forgot it (the exact night) ; so seek it;In the last ten nights on odd numbers. I saw (the glimpses of that dream) that I was prostrating in water and mud. Abu Sa'id al-Khudri said: It rained on the twenty-first night and the water dripped (from the roof) of the mosque at the place where the Messenger of Allah (ﷺ) observed prayer. I looked at him and as he completed the dawn prayer, (I found) his face was wet with mud and water.