Daenerys tells her Dothraki "You killed my enemies in their iron suits, you tore down their stone houses" - the same phrases she mentioned in her speech to the Dothraki warriors in "Blood of My Blood".
Daenerys asks the Dothraki "Will you ride the wooden horses across the black salt sea? Will you kill my enemies in their iron suits and tear down their stone houses?" - the same phrases Drogo used in his speech to his warriors in "You Win or You Die".