Sayyidah Umm Atiyyah (may Allah be pleased with her) said: We pledged allegiance to the Messenger of Allah (peace and blessings be upon him), and he (peace and blessings be upon him) said: "Do not associate anything with Allah," and he (peace and blessings be upon him) forbade us from wailing. A woman drew back her hand and said: O Messenger of Allah (peace and blessings be upon him), so-and-so did me a kindness, so I wish to repay her. He (peace and blessings be upon him) said nothing to her; she went away, then she came back and pledged allegiance. She said: None of us fulfilled this pledge except Umm Sulaym (may Allah be pleased with her), Umm al-Ala (may Allah be pleased with her), and the daughter of Abu Sabrah, the wife of Mu'adh, or she said: the daughter of Abu Sabrah and the wife of Mu'adh.
Imam Bukhari (may Allah have mercy on him) recorded it in his Sahih from Musaddad in this way, and in it there is no mention that he made an exception for her for what she wanted; rather, it states that he did not grant her request until she came back and he accepted her pledge.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنائز / 7105