Sayyiduna Bashir bin Aqrabah al-Juhani (may Allah be pleased with him) said: I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever stands up to deliver a speech, seeking by it nothing but to be seen and heard of, Allah, the Mighty and Majestic, will make him stand in a place of showing off and seeking fame."
Hadith Referenceالمعجم الكبير للطبراني / باب الباء / 1217