What passes Infront of a praying person that nullifies his prayer?

 What passes Infront of a praying person that nullifies his prayer?

As reported in hadith,

Narrated `Aisha:

The things which annul the prayers were mentioned before me. They said, "Prayer is annulled by a dog, a donkey and a woman (if they pass in front of thepraying people)." I said, "You have made us (i.e. women) dogs. I saw the Prophet (ﷺ) praying while I used to lie in my bed between him and the Qibla. Whenever I was in need of something, I would slip away. for I disliked to face him."

Sahih al-Bukhari 511.

So if a woman passes Infront of the praying person while he has no sutrah(a wall) to prevent him from being distracted. He has to start the prayer again, same as a dog and a donkey.

some scholars say the woman here refers to a menstrual woman and the dog is a black dog because the prophet pbuh said,

the black dog is a devil.