AR-Rubayyi bint Mu'awwidh bin Al-Afra narrated: that she got a Khul during the time of the Prophet. So the Prophet ordered her - or: she was ordered - that she observe an Iddah of a menstruation."

'Abdullah bin Abbas (may Allah be pleased with them both) says that the wife of Thabit bin Qais obtained khul‘ (divorce at the wife’s instance) from her husband during the time of the Prophet (peace and blessings of Allah be upon him), so the Prophet (peace and blessings of Allah be upon him) ordered her to observe the waiting period of one menstrual cycle. Imam Tirmidhi says:
1- This hadith is hasan ghareeb,
2- «مختلعہ» (a woman who obtains khul‘) — there is a difference of opinion among the scholars regarding her waiting period. Most of the scholars among the Companions and others say that the waiting period of «مختلعہ» is the same as that of a divorced woman, i.e., three menstrual cycles. This is also the view of Sufyan Thawri and the scholars of Kufa, and Ahmad and Ishaq bin Rahwayh also hold this view,
3- And some of the scholars among the Companions and others say that the waiting period of «مختلعہ» is one menstrual cycle,
4- Ishaq bin Rahwayh says that if someone adopts this view, it is a strong view.

Thawban narrated that: The Prophet said: "The women who seek a Khul are hypocrites."

Thawban narrated that: The Messenger of Allah said: "Whichever woman seeks a Khul from her husband without harm (cause), then the scent of Paradise will be unlawful for her."

Abu Hurairah narrated that: The Messenger of Allah said: "Indeed the woman is like a rib, if you try to straighten her you will break her, and if you leave her, what you enjoy from her will be with the crookedness."

Ibn Umar narrated: "I had a wife whom I loved, but my father disliked her, so he ordered me to divorce her but I refused. I mentioned that to the Prophet and he said: 'O Abdullah bin Umar! Divorce your wife.'"

Abu Hurairah narrated that: The Prophet said: "No woman should ask for the divorce of her sister (in religion) in order to spill what is in her container."

Abu Hurairah narrated that: The Messenger of Allah said: "Every divorce is valid except the divorce of the Ma'tuh person whose reason is overcome." (Da'if Jiddan)

Hisham bin Urwah narrated from his father, from Aishah that she said: "The people were such that a man would divorce his wife when he wanted to divorce her, and she remained his wife when he wanted to take her back while she was in her Iddah, and he could divorce a hundred times, or even more, such that a man could say to his wife: 'By Allah! I will neither divorce you irrevocably, nor give you residence ever!' She would say: 'And how is that?' He would say: 'I will divorce you, and whenever your Iddah is just about to end I will take you back. So a woman went to Aishah to inform her about that, and Aishah was silent until the Prophet came. So she told him and the Prophet was silent, until the Qur'an was revealed: Divorce is two times, after that, retain her on reasonable terms or release her with kindness.'" So Aishah said: "So the people could carry on with divorce in the future, (knowing) who was divorced, and who was not divorced."

‘From another chain,’ Hisham bin Urwah narrated from his father Hisham a hadith similar in meaning, and in this narration, Abu Kuraib did not mention the intermediary of Aisha. Imam Tirmidhi says:
This narration is more authentic than the narration of Ya’la bin Shabeeb (i.e., its being marfu’ is more authentic).