Midrash sur Rois 1 7:46

["and the plain": We are hereby taught that He showed him the overturning of Sodom and Amorah, (it being written here "and the plain," and elsewhere, (Bereshith 19:25) "And He overturned those cities and the entire plain.")] Variantly: We are hereby taught that He showed him Solomon the son of David fashioning vessels for the Temple, it being written (I Kings 7:46) "In the plain of the Jordan the king cast them."