Regarding the saying of Allah: 'And they will not disobey you in any just matter.' (60.12) That was one of the conditions which Allah imposed on The believing) women (who came to take the oath of allegiance to the Prophet).
Sahih al-Bukhari Book 65, Hadith 413
← Previous Hadith We took the oath of allegiance to Allah's Messenger (ﷺ) and he recited to us: 'They will not associate anything in worship with Allah,' and forbade us to bewail the dead. Thereupon a lady withdrew her hand (refrained from taking the oath of allegiance), and said, "But such-and-such lady lamented over one of my relatives, so I must reward (do the same over the dead relatives of) hers." The Prophet (ﷺ) did not object to that, so she went (there) and returned to the Prophet (ﷺ) so he accepted her pledge of allegiance.

Sahih al-Bukhari Book 65, Hadith 412 Next Hadith → While we were with the Prophet, he said, "Will you swear to me the pledge of allegiance that you will not worship any thing besides Allah, will not commit illegal sexual intercourse, and will not steal?" Then he recited the Verse concerning the women. (Sufyan, the subnarrator, often said that the Prophet: added, "Whoever among you fulfills his pledge, will receive his reward from Allah, and whoever commits any of those sins and receives the legal punishment (in this life), his punishment will be an expiation for that sin; and whoever commits any of those sins and Allah screens him, then it is up to Allah to punish or forgive them."

Sahih al-Bukhari Book 65, Hadith 414