Does a worshipper's prayer become invalid if a woman stretches her leg between him and the sutrah to rest, without standing with her whole body?

The mere passing of a woman in front of a praying person does not invalidate the prayer. Therefore, the passing of a part of her would invalidate it even less so. Aisha, may Allah be pleased with her, denied the comparison of women to dogs and donkeys in terms of what invalidates prayer. She narrated that she used to be in front of the Prophet, peace and blessings be upon him, while he was praying, and his prayer was not invalidated by that.