Riyad as-Salihin 1350 — The Book of Jihad

An-Nu‘man b. Muqarrin Narrated from:

I was with the Messenger of Allah (ﷺ) when I witnessed that if he did not begin fighting in the early part of the day, he would postpone fighting till the sun had declined, the blowing of the breeze had blown and the victory from Allah had come.[Abu Dawud and At-Tirmidhi].