Safina said:I was a slave of Umm Salama, and she said, “I shall emancipate you, but I stipulate that you must serve God’s Messenger as long as you live” I replied, “Even if you do not make a stipulation with me I shall not leave God’s Messenger as long as I live”. She then emancipated me and made the stipulation with me. Abu Dawud and Ibn Majah transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب العتق / 3398
Hadith Gradingالألبانی:جيد | زبیر علی زئی:إسناده حسن
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «إسناده حسن، رواه أبو داود (3932) و مسلم (2526)»