In The Name of Allaah, The Most Merciful, The Bestower of Mercy.

Mu’aathah [may Allah have mercy upon her] asked Aa’ishah [may Allah be pleased with her], “Why does the menstruating woman make up for the missed days of fasting but not for the missed prayers?” She said, “We used to menstruate during the lifetime of the Messenger [peace and blessings of Allaah be upon him] and we were commanded (by him) to make up for the missed days of fasting and not to make up for the missed prayers”. And in another report, Mu’aathah said that Aa’isha said to her, “Are you a Harooriyyah?”

Harooriyyah: The word Harooriyyah is the female noun of Harooree, and it is attributed to Harooraa – a town 2 miles from Kufa. The one who believed in the path of the Khawaarij was referred to as Harooree because they were the first sect – amongst them – that rebelled against Ali [may Allaah be pleased with him] at that town (Harooraa). The khawaarij are numerous groups and one of their fundamental principles- which they agreed upon amongst themselves – is that they accepted what is stated in the Qur’aan and rejected the additional text found in the Hadeeth. Aaisha’s disapproval against her (i.e. against Mu’aathah due to the question she asked) was either due to her (i.e. Aa’isha’s) knowledge of the fact that they (i.e. the Khawaarij of Harooraa) used to obligate on the women to make up for the missed prayers after menstruation, because indeed Ibn Abdul Barr [may Allaah have mercy upon him] reported a statement about this from a group amongst the Khawaarij, or due to her knowledge that their fundamental principle necessitated that. (1)

Many Amongst Ahlul Bidah – Including The Khawaarij – Went Astray Due to Their Misguided Intellects

Question to Imaam Abdul Azeez Bin Baaz [may Allaah have mercy upon him] Shaikh, are the ones who depend on their intellects in understanding many of the affairs of the religion considered to be from those who are mistaken?
Answer: Yes; it is obligated on him not to depend on his intellect, rather he studies the texts and relies on the divine texts from the speech of Allaah and that of Allaah’s Messenger [peace and blessings of Allaah be upon him], because there is guidance in it and direction towards good. As for the intellect, it can be right or wrong. The sects that oppose Ahlus sunnah were destroyed due to their intellects. They thought that they had good intellects and that their intellects arrived at what is correct and thus they opposed the texts by way of their stagnant intellects which they thought were sound. What was that which made the Jahmiyyah negate the Perfect Names and Attributes of Allaah, except due to their corrupt intellects?!

What was it that led the Mutazilah to negate the attributes of Allaah and declared that the sinners [i.e. those who die whilst committing the major sins that are lesser that major kufr and major shirk] will remain in the fire forever, except due to their corrupt intellects?! Likewise, is the case of their followers who utter this same speech.

What led the Khawaarij to excommunicate the people due to committing sins – that the sinner is a disbeliever and that he will remain in the fire forever, except due to their corrupt intellects. Likewise. this is the case regarding other than them amongst the proponents of Bidah. The intellects which they depend upon is that which destroy them, because they think that their intellects are safe, sound, good and infallible, whereas that is not the case; rather it is not infallible – commits mistakes a lot; however they hold a good suspicion regarding their intellects and an evil suspicion regarding the texts and thus they are destroyed.

It is obligatory to harbour a good suspicion regarding the texts and an evil suspicion regarding the intellect, and to submit the intellects to the texts. The texts are infallible if their chain of transmission are established to be authentic. As for the intellects, they are fallible. A person susceptible to mistakes, shortcoming and desires. As for the Messenger [peace and blessings of Allaah be upon him], what he conveyed from Allaah is infallible. and likewise the Qur’aan is infallible- the speech of Allaah. Therefore, it is obligatory that the Qur’aan and Sunnah passes a judgement on your intellect and that you give precedence to the Qur’aan and Sunnah over your intellect- over the intellect of the Shaikh, the Mashaayikh, your forefathers, ancestors and all the people. The texts are given precedence over all the intellects. (2)

Al-Allaamah Saaleh Al-Fawzaan [may Allaah preserve him] said: “The khawaarij are of different types: Amongst them are those who carry weapons; there are those who speak like the who said to the Messenger (peace and blessings of Allaah be upon him], ”Be Just”. Amongst them are those who write and amongst them is the one who believes in his heart, but he neither speaks nor does anything; however he has the belief of the khawaarij in his creed. But some of them are worse than others”. (3)

Read: The Khawarij Past and Present- By Shaikh Abdul Waahid Abu Khadeejah [may Allaah preserve him]
https://www.abukhadeejah.com/isis-in-iraq-syria-ibn-kathir-died-774-ah-if-the-khawaarij-ever-gained-strength-in-iraq-and-syria-there-would-be-mass-killing/

[Ref1: Irwaa Al-Ghaleel- By Imaam Al-Albaanee (may Allaah have mercy upon him). An Excerpt from Vol 1. Page 220-221. slightly paraphrased. Publisher: Al-Maktabah Al-Islaamiy. 2nd Edition 1405 (1985)]

[Ref2:https://binbaz.org.sa/fatwas/28730/%D9%8A%D8%AC%D8%A8-%D8%A7%D9%84%D8%A7-%D9%8A%D8%B9%D8%AA%D9%85%D8%AF-%D8%A7%D9%84%D8%A7%D9%86%D8%B3%D8%A7%D9%86-%D8%B9%D9%84%D9%89-%D8%B9%D9%82%D9%84%D9%87-%D8%A8%D9%84-%D9%8A%D8%B9%D8%AA%D9%85%D8%AF-%D8%B9%D9%84%D9%89-%D8%A7%D9%84%D9%86%D8%B5%D9%88%D8%B5

[Ref 3: Al-Ijaabaat Al-Muhimmah Fil-Mashaakil Al-Mulimmah: page: 10-11]