Bhagavatapurana 3.26.50

3.26.50

etāny asaṃhatya yadā mahad-ādīni sapta vai /
kāla-karma-guṇopeto jagad-ādir upāviśat //

50. When Mahat and other principles, seven in number, remained separate; and [they were not able to create properly the Brahmanda and the body of the Virat-Purusha];