عن حكيمة بنت أميمة عن أمها أميمة بنت رقيقة قالت كان للنبي ﷺ قدحٌ من عيدان يبول فيه يضعه تحت السرير فجاءت إمرأة اسمها بركة فشربته فطلبه فلم يجده فقيل شربته بركة فقال لقد احتظرَت من النار بحِظارٍ قال الحافظ أبو الحسن بن الأثير وقيل إن التي شربت بوله عليه الصلاة والسلام انما هي بركة الحبشية التي قدمت مع أم حبيبة من الحبشة وفرق بينهما فالله أعلم
البداية والنهاية لإبن كثير سنة إحدى عشرة من الهجرة باب ذكر عبيده ﷺ اماؤه عليه الصلاة والسلام
Hakimah bint Umaimah related from her mother Umaimah bint Ruqaiqah, who said: The Prophet (SAW) had a wooden bowl to urinate in, and He would put it under the bed. And a woman named Barakah came and drank it. He searched for it but did not find it. Someone said: Barakah drank it. And He said: She has shielded herself from hellfire with a sure shield. Al-Hafidh Abu Al-Hasan Al-Athir said: Someone said that the woman who drank His urine (prayers and peace upon him) was indeed Barakah the Ethiopian, the one that came over with Umm Habibah from Ethopia; he made a distinction between the two of them. But Allah knows better.
Ibn Kathir, Al-bidaya wa Al-nihaya [The Beginning and The End], Year eleven after the Hijra; Section: Mention of His (SAW) servants; His (prayers and peace upon him) female servants