It was narrated that Ka'b bin 'Ujrah said that:
He entered the masjid and 'Abdur-Rahman bin Umm Al-Hakam was delivering the Khutbah while seated. "He said: 'Look at this man who is delivering the khutbah while seated when Allah (SWT) says: And when they see some merchandise or some amusement they disperse headlong to it, and leave you standing.'" (RU)
App reference (RU): Book 14, Hadith 34 (RU)
English reference (RU): Vol. 2, Book 14, Hadith 1398 (RU)
Arabic reference (RU): Book 14, Hadith 1408 (RU)