It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The mufarridun (those who have outstripped others) have gone ahead." The Companions said: O Messenger of Allah (peace and blessings be upon him), and who are the mufarridun? He (peace and blessings be upon him) said: "Those who are devoted to the remembrance of Allah (and are absorbed in remembering Him)." This hadith is sahih (authentic) on the condition of the two Shaykhs, but they did not record it.