Skandapurana 7.20.126

7.20.126

daityānāṃ sainyasannāhaḥ, śuṃbhaniśuṃbhayormahatā sainyena kauśikīṃ prati prayāṇam . devyāḥśarīrād yoginīnāṃ prādurbhāvaḥ . devyāḥ sainyasajjā, yuddhāya niryāṇam .

The mobilization of the army of the Daityas; the march of Śumbha and Niśumbha toward Kauśikī with a great army. The manifestation of the Yoginīs from the body of the goddess. The equipping of the goddess's army, [and] their setting forth for battle.