יְבַקַּ֣ע צֻ֭רִים בַּמִּדְבָּ֑ר וַ֝יַּ֗שְׁקְ כִּתְהֹמ֥וֹת רַבָּֽה׃
He cleaved rocks in the wilderness, And gave them drink abundantly as out of the great deep.
Rashi on Psalms
He split rocks (Exod. 17:6): “and you shall strike the rock.”
Rashi on Psalms
and He gave them to drink as [from] great deeps in the great deeps. Even as they went through the midst of the sea, whose waters are salty, He sweetened fountains for them in the midst of the sea.