I asked Ayesha about the words of Allah Most High, "Indeed, We have granted you al-Kawthar" [Kawthar 108:1].She said, "It is a river granted to your Prophet ﷺ. Its banks are lined with hollowed pearls, and its vessels are as numerous as the stars."
عن عائشة، قال: سألتها عن قوله تعالى: {إنا أعطيناك الكوثر} [سورة الكوثر: ١] قالت: نهر أعطيه نبيكم ﷺ شاطئاه عليه در مجوف، آنيته كعدد النجوم.