Sayyiduna Ibn Umar (may Allah be pleased with them both) said: Had I not heard this hadith from the Messenger of Allah (peace and blessings be upon him) not just once but again and again (up to seven times), I would not have narrated it. I heard the Messenger of Allah (peace and blessings be upon him) say: "Three people will be on mounds of musk on the Day of Resurrection; grief will not terrify them, and they will not be alarmed when the people are alarmed: a man who learned the Qur'an and upheld it, seeking thereby the Face of Allah and what is with Him; a man who called the adhan for the five prayers every day and night, seeking thereby the Face of Allah and what is with Him; and a slave whom the slavery of this world did not keep from obeying his Lord."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13527