Nasai

The revelation is from Allah, therefore her (‘A’ishah radi Allahu anha) rank is also the highest in the sight of Allah among all of you, and this is a great honor for ‘A’ishah that among the wives present at that time, she was also the most virtuous in the sight of Allah. However, in this narration, there is no comparison with Khadijah (radi Allahu anha) because she was not alive at that time, and the Prophet (sallallahu alayhi wa sallam) said "among you (minkunna)."

Hadith Commentary: Hafiz said: This does not necessitate the superiority of Aisha (radi Allahu anha) over Khadijah (radi Allahu anha); rather, it indicates superiority over those wives who were present during the time of Aisha (radi Allahu anha). As for the reason why revelation descended while she was in her clothes, it is possible that this was due to her noble father, Abu Bakr (radi Allahu anhu), being the special companion of the Prophet (sallallahu alayhi wa sallam), and Allah, the Exalted, granted this blessing to his daughter as well. Another possible reason is that Aisha (radi Allahu anha) was the particularly beloved wife of the Prophet (sallallahu alayhi wa sallam), or it may be that she used to keep her clothes very clean.

In short, "That is the bounty of Allah; He gives it to whom He wills." ()

In another hadith, it is mentioned that then those wives sought intercession through Fatimah (radi Allahu anha). The Prophet (sallallahu alayhi wa sallam) said: "Daughter, if you love me, then love Aisha (radi Allahu anha)." They said: "Now I will not interfere in this matter."

Qastallani and Kirmani have said that, according to the count of hadiths, at this point, the first half of Sahih Bukhari is completed. However, in terms of sections (paras), the first half is completed at the fifteenth section.

Hadith Commentary:
➊
This hadith establishes that Aisha (radi Allahu anha) is superior to all the other noble wives (azwaj mutahharat, radi Allahu anhunna).
Since Khadijah (radi Allahu anha) had passed away before this, she is not included in this address.
➋
Some scholars have explained the particular distinction mentioned in the hadith by stating that Aisha (radi Allahu anha) had a special inclination towards cleanliness of clothing, and cleanliness is beloved to the angels.
For this reason, revelation would descend upon the Prophet (sallallahu alayhi wa sallam) while he was in her bed.
This does not mean that the other wives of the Prophet (sallallahu alayhi wa sallam) did not care for cleanliness; rather, they too maintained the highest standards of cleanliness, but Aisha (radi Allahu anha) excelled above all.
In any case, Imam Bukhari (rahimahullah) has compiled ample material regarding the virtues of Aisha (radi Allahu anha).
May Allah reward him with goodness.
(Fath al-Bari: 7/137) (Amin)

Explanation:
1:
In Sahih Bukhari, regarding the revelation about the acceptance of the repentance of Ka‘b ibn Malik radi Allahu anhu, it is mentioned that this revelation descended in the house of Umm Salamah radi Allahu anha.
However, this does not mean that the Prophet sallallahu alayhi wa sallam and Umm Salamah radi Allahu anha were under the same blanket.
The distinction of revelation descending while under a blanket is exclusive to Aisha radi Allahu anha,
and this is a very great virtue.