It is narrated from Sayyiduna al-Mustawrid (may Allah be pleased with him) that he said: We were with the Prophet (peace and blessings be upon him), and the people were discussing this world and the Hereafter. Some said: "This world is only a means of reaching the Hereafter; in it are deeds, prayer and zakah." A group of them said: "In the Hereafter is Paradise," and they said whatever Allah willed. Then the Messenger of Allah (peace and blessings be upon him) said: "This world in comparison with the Hereafter is only as if one of you were to go to the sea and dip his finger in it; whatever (the finger) brings out, that is the world." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.