They have a story where angels refused to enter a house with a dog in it, so now they believe that if there is a dog in the house, angels will not visit them.
As if that’s at all likely, in the first place.
I question who that “angel” was, anyway.
“Even the devil can disguise himself as an angel of light”
You only have to read the Koran to know that it is Satan’s handiwork.