Amr bin Maymun said: No Thursday evening passed me by without my coming to Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him), and I never heard him say: I heard the Messenger of Allah (peace and blessings be upon him), until one evening he said: "I heard the Messenger of Allah (peace and blessings be upon him)," then he lowered his head, then raised his head, and I saw that the buttons of his shirt were undone, the veins of his neck had swollen and his eyes had filled with tears. Then he said: "Or a little more than that, or a little less than that, or close to that, or something like that."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8585