A recent scientific study confirms that having lights on when going to bed impacts the biological processes inside the brain and causes disorders that lead to obesity. Consequently, scientists recommend turning lights off at night to protect the body and brain.

Glory to Allah; this advice, recommended by scientists in the 21st century, was long stated by Prophet Mohammad, peace be upon him

14 centuries ago. A sound chain of transmission reported: Prophet Mohammad, PBUH, said: "when you go to bed, put the lamps off." The question is: isn’t this hadith sufficient evidence that Prophet Mohammad, PBUH, speaks nothing but the truth?

الرد على الشبهات! شمسي في حوار مع مسيحي
https://www.youtube.com/watch?v=ccJtMS2_xLQ

الداعيه شمسي يشرح لشاب مسيحي محمد في الانجيل مترحم ||||

https://www.youtube.com/watch?v=oUE0WIrFxio