It is narrated from Alqamah (may Allah have mercy on him) that Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) used to stand (to give admonition) every Thursday evening, and I never heard him on any evening say "The Messenger of Allah (peace and blessings be upon him) said" except once;
so (when he said it) I looked at him; he was leaning on a staff, and I saw that the staff was trembling (out of awe and fear in conveying the Prophet's words).
Hadith Referenceالمعجم الأوسط / باب الألف / 1981
Hadith Takhrij«أخرجه الطبراني فى «الكبير» برقم: 8621»