Reference: Fataawa Ramadhaan – Volume 2, Page 852, Fatwa No.841
Fataawa ash-Shaykh Muhammad as-Saalih al-Uthaymeen – Volume 1, Page 563
Question: What are the signs of Laylatul-Qadar?
Response: From amongst the signs of Laylatul-Qadar is that it is a calm night and the believer’s heart is delighted and at peace with it, and he becomes active in doing good actions, and the sun on the following morning rises clearly without any rays.