Abd al-Rahman bin Maysarah (may Allah have mercy on him) said: Some people - or a man - passed by Sayyiduna al-Miqdad (may Allah be pleased with him), and he said: "These two eyes have attained success, for they saw the Messenger of Allah (peace and blessings be upon him)." Sayyiduna al-Miqdad (may Allah be pleased with him) became intensely angry and said: "O people, do not wish for something which Allah has kept hidden. How many there were who saw him (peace and blessings be upon him) but derived no benefit from that meeting!"
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17742