المحيط
كلمة (المحيط) في اللغة اسم فاعل من الفعل أحاطَ ومضارعه يُحيط،...
Abu Sa‘īd al-Khudri (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "In Paradise there is a tree that the rider of a lean swift horse cannot cover (its distance) in one hundred years." Abu Hurayrah (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "A rider walks in its shade one hundred years without crossing it."
شرح الحديث :
This Hadīth indicates the expansiveness of Paradise and its great bliss. It describes the trees of Paradise and their shade. One is so huge that a swift horse rider cannot reach its end. This indicates the great blessing that Allah has prepared for His obedient slaves.