Mishkatul Masabih — Hadith #40070

He said, Rasulullah (Sallallahu Alaihi Wasallam) said: Let none of you seek to offer Salat at the time of sunrise and sunset. In the language of a description, he said, "When the sun rises the sphere will leave the prayer, until The sun will not be quite clear. Similarly, when the sun goes down, the prayer will be stopped until the sun goes down completely. And do not wish to pray at the time of sunrise and sunset. Because the sun has two horns of Satan Rises through the middle. (Bukhari, Muslim) [1]