Midrash su II Re 3:17

Hew these two tablets (Exod. 34:1). Scripture states elsewhere: The blessing of the Lord, it maketh rich (Prov. 10:22). This refers to Elisha’s prayer for water, when he said: Thus saith the Lord: Ye shall not see rain, neither shall ye see wind, yet that valley shall be filled with water (II Kings 3:17). What else is written there? And it came to pass in the morning, about the time of making the offering (ibid., v. 20). One who says in the morning also says “the time of the morning offering.” R. Tanhuma said: A rain storm occurred in the south and the water reached (the Temple) at the time the offering was made. Hence, The blessing of the Lord, it maketh rich, and toil addeth nothing thereto (Prov. 10:22). Though they did not experience either the rain or the wind, the valley was filled with water.