Besides putting an end to female infanticide...
Besides putting an end to female infanticide, Islam also gave dignity, honor and rights to women, and it guaranteed those rights. Allah Ta'ala wished to demonstrate th;lt the laws of Islam were all practicable. To demonstrate the practicability of those laws, and to show the Islamic "Design of Life," He chose the house of His slaves, Muhammed and Khadija. Without Khadija, the laws of Islam would have remained meaningless.
In fact, it is even possible that Muhammed Mustafa could not have promulgated those laws without her. One of the greatest blessings that Muhammed Mustafa and Khadija received from Allah Ta'ala was their daughter, Fatima Zahra. As noted before, Fatima was born after the death of her brothers, Qasim and Abdullah. She was only five years old when her mother died. After the death of her mother, Muhammed Mustafa, the messenger of Allah, became both a father and a mother for her.
In bringing up his daughter, the Messenger of Allah was demonstrating the applicability of the laws of Islam. Since he is the model for all Muslims, they have to imitate him in all his deeds. He bestowed the utmost love upon, and showed the greatest respect to his daughter. Both in Makka and in Medina, many important persons, such as princes and leaders of powerful tribes, came to see the messenger of Allah. He never rose from the ground to greet any of them.
But if he heard that his daughter, Fatima Zahra, was coming to see him, he rose from the floor, went forward to greet her, escorted her back, and gave her the place of honor to sit. He did not show so much esteem and regard to anyone at any time in his life - man or woman! SUCH IS THE BOUNTY OF ALLAH, WHICH HE BESTOWS ON WHOM HE WILL: AND ALLAH IS THE LORD OF THE HIGHEST BOUNTY. (Quran Majid.
Chapter 62; verse 4) Allah Ta'ala bestowed His Bounty upon Fatima Zahra, the daughter of His friend and His messenger, Muhammed Mustafa. It was Khadija's only daughter, Fatima Zahra, who became the recipient of the accolades of Heaven in the 76th chapter of Quran Majid - Sura Dahr. In fact, the whole chapter is "dedicated" to her and to her family comprising her husband, Ali ibn Abi Talib; her children, Hasan and Husain; and her maid, Fizza.
She also became the "exegesis" of the 108th Chapter of Quran Majid - Sura Kauthar (=Abundance).