It is narrated from Hazrat Abdullah bin Busr (may Allah be pleased with him) that two Bedouin men came to the service of the Prophet (peace and blessings be upon him), and one of them asked, "O Muhammad! (peace and blessings be upon him) Who is the best person?" The Prophet (peace and blessings be upon him) replied, "The one whose life is long and whose deeds are good." The other said, "The commands of Islam are many; tell us something comprehensive that we can hold firmly to." The Prophet (peace and blessings be upon him) said, "Let your tongue remain moist with the remembrance of Allah at all times."