Assalam alaikoum wa Rahmatullaah wa Barakaatuh,
Verily! In the creation of the heavens and the earth, and in the alternation of night and day, and the ships which sail through the sea with that which is of use to mankind, and the water (rain) which Allah sends down from the sky and makes the earth alive therewith after its death, and the moving (living) creatures of all kinds that He has scattered therein, and in the veering of winds and clouds which are held between the sky and the earth, are indeed Ayat (proofs, evidences, signs, etc.) for people of understanding. [2:164]
This picture was taken a couple of months ago when I was living in Australia. It was right after it stopped raining and we happened to be standing near this lake when we noticed the rainbow. One of my favourite pictures! Allahu Akbar!