The Prophet ﷺ was about to wipe away Usama's mucus.Ayesha said, "Let me be the one to do it."He said, "Ayesha, love him, for I love him."
حدثنا الحسين بن حريث حدثنا الفضل بن موسى عن طلحة بن يحيى عن عائشة بنت طلحة
أراد النبي ﷺ أن ينحي مخاط أسامة قالت عائشة دعني حتى أكون أنا الذي أفعل قال يا عائشة أحبيه فإني أحبه
[Its isnad is hasan] Ibn Hibban (Al-Ihsan: 7018) also narrated it through Husayn bin Hurayth with the same wording. The hadith has many corroborating narrations, see 1430.Talha bin Yahya was deemed reliable by the majority, and his hadith is hasan. Barqi said, "Most scholars of hadith affirm him."