(28) Events of the Day of Resurrection and the Beginning of Creation
كتاب أحوال القيامة وبدء الخلق
(4a) Chapter: The Pond and the Intercession - Section 1
(4) باب الحوض والشفاعة - الفصل الأول
Mishkat al-Masabih 5566 
Anas reported God's messenger as saying, "While I was travelling in paradise, I came to a river whose banks were domes of hollowed pearls, and when I asked Gabriel what this was, he replied that it was al-Kauthar* which my Lord had given me. Its soil was the most excellent musk." *Quran, 108. Bukhari transmitted it.
عَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " بَيْنَا أَنَا أَسِيرُ فِي الجنَّةِ إِذا أَنا بنهر حافتاه الدُّرِّ الْمُجَوَّفِ قُلْتُ: مَا هَذَا يَا جِبْرِيلُ؟ قَالَ: الْكَوْثَرُ الَّذِي أَعْطَاكَ رَبُّكَ فَإِذَا طِينُهُ مِسْكٌ أذفر ". رَوَاهُ البُخَارِيّ
 صَحِيح  (الألباني)حكم :
Reference : Mishkat al-Masabih 5566
In-book reference : Book 28, Hadith 44