If someone offers Salat (prayer) in a garment bearing marks of a cross or picture, will he Salat be annulled? And what is forbidden thereof

Narrated Anas: `Aisha had a Qiram (a thin marked woolen curtain) with which she had screened one side of her home. The Prophet (ﷺ) said, "Take away this Qiram of yours, as its pictures are still displayed in front of me during my prayer (i.e. they divert my attention from the prayer).