Walaikum Assalaam Warahmatullahi Wabarakatuhu,
Yazīd bin Abī Habīb (may Allāh be pleased with him) reports that the Prophet (peace and blessings upon him) passed by two women who were praying salāh. He said, ‘When you prostrate, let part of your body cling to the earth, for women are unlike men in this regard’. (Marāsīl of Abū Dāwūd)
Imām Baihaqī says,”All of the laws of salāh, in which a woman differs from a man are based on the principle of satr (concealment)”. This means that the woman is instructed to do all that which is more concealing for her.
The woman should keep her limbs close to her body during rukoo’ and sujood, and not spread them out, because this is more modest and covering. (Al-Mughni 2/258).
Al-Nawawi said: “Al-Shaafi’i said, in al-Mukhtasar: there is no difference between men and women in prayer, except that women should keep the parts of their bodies close to one another, and they should make their stomachs touch their thighs during sujood. This is more covering and preferable, in rukoo’ and the rest of the prayer too.” (See al-Majmoo’ 3/429).
I hope it will be helpful. May Allah guide us all to the straight path.