Musnad Ahmad

It is narrated from Hazrat Utbah (may Allah be pleased with him) that a Bedouin came to the service of the Prophet (peace and blessings be upon him) and began asking questions about the Pond of Kawthar and Paradise. Then he asked, "Will there be fruits in Paradise?" The Prophet (peace and blessings be upon him) replied, "Yes! And there will also be a tree named Tuba there." He asked, "To which tree on earth can you compare it?" The Prophet (peace and blessings be upon him) replied, "There is no tree on your earth that can be compared to it." Then the Prophet (peace and blessings be upon him) asked him, "Have you ever been to Syria?" He said, "No." The Prophet (peace and blessings be upon him) said, "There is a tree similar to it in Syria, which is called the walnut tree. It stands on a vine and spreads out from above." He asked, "How thick is its root?" The Prophet (peace and blessings be upon him) replied, "If a young camel from your household sets out, it will not be able to circle its root until its bones begin to creak from old age." (This refers to the tree of Paradise.) The Bedouin asked, "Will there be grapes in Paradise?" The Prophet (peace and blessings be upon him) replied, "Yes!" He asked, "How thick will its clusters be?" The Prophet (peace and blessings be upon him) replied, "As much as the distance a speckled crow flies continuously for a month without stopping." He asked, "How thick will one grape be?" The Prophet (peace and blessings be upon him) replied, "Has your father ever slaughtered a very large ram from among his goats?" He said, "Yes!" The Prophet (peace and blessings be upon him) said, "Then did he skin it and give the skin to your mother and say, 'Make a bucket out of it'?" He said, "Yes!" Then he said, "In that case, a single grape will suffice for me and all my family." The Prophet (peace and blessings be upon him) replied, "Yes! And it will suffice for all your family members as well."