מדרש על חגיגה 2:10

Whence was the earth created? He took of the snow (or ice) which was beneath His Throne of Glory and threw it upon the waters, and the waters became congealed so that the dust of the earth was formed, as it is said, "He saith to the snow, Be thou earth" (Job 37:6).

THE SABBATH
THE School of Shammai said: The heavens were created first, and the earth afterwards, as it is said, "In the beginning God created the heavens and the earth" (Gen. 1:1). The School of Hillel said: The earth was created first, and the heavens afterwards, as it is said, "Of old hast thou laid the foundation of the earth; and the heavens are the work of thy hands" (Ps. 102:25). The School of Shammai said: The heavens were created first, and the earth afterwards, as it is said, "These are the generations of the heavens and of the earth" (Gen. 2:4). The School of Hillel said: The earth was created first, and the heavens afterwards, as it is said, "In the day that the Lord God made earth and heaven" (ibid.). The School of Shammai said: The heavens were created first, because it is said, "And the heavens and the earth were finished" (Gen. 2:1). The School of Hillel said: The earth was created first, and the heavens afterwards, as it is said, "Yea, mine hand hath laid the foundation of the earth, and my right hand hath spread out the heavens" (Isa. 48:18). The School of Shammai said: The heavens were created first, and the earth afterwards, because it is said, "Thus saith the Lord, The heaven is my throne, and the earth is my footstool" (Isa. 66:1). Contention arose between them (i.e. the Schools) on this question, until the Holy Spirit rested between them, and they both agreed that both (heavens and earth) were created in one hour and at one moment.