A male transvestite was at her house while the Messenger of Allah ﷺ was inside, and he said to the brother of Umm Salama, "Abdullah bin Abu Umaya, if Allah grants you victory over Taif tomorrow, I will guide you to the daughter of Ghaylan, for she comes forward with four folds and turns away with eight."The Messenger of Allah ﷺ heard him and said, "These people must not enter upon you."Bukhari added, "He was besieging Taif at that time."
أن مخنثا كان عندها ورسول الله ﷺ في البيت، فقال لأخي أم سلمة: يا عبد الله بن أبي أمية إن فتح الله عليكم الطائف غدا، فإني أدلك على بنت غيلان، فإنها تقبل بأربع، وتدبر بثمان، قال: فسمعه رسول الله ﷺ فقال: لا يدخل هؤلاء عليكم وزاد البخاري: وهو محاصر الطائف يومئذ.
Bukhari narrated it in the Book of Military Expeditions (4324), and Muslim narrated it in the Book of Greetings (32:2180), both of them through the route of Hisham (bin Urwa), from his father, from Zaynab bint Abu Salama, from Umm Salama, who said, "..." and she mentioned it.