Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 74
Sanskrit:
यजुर्भिरकरोच्छाखा दशपञ्च शतैर्विभु: ।जगृहुर्वाजसन्यस्ता: काण्वमाध्यन्दिनादय: ॥ ७४ ॥
ITRANS:
yajurbhir akaroc chākhādaśa pañca śatair vibhuḥjagṛhur vājasanyas tāḥkāṇva-mādhyandinādayaḥ
Translation:
From these countless hundreds of mantras of the Yajur Veda, the powerful sage compiled fifteen new branches of Vedic literature. These became known as the Vājasaneyi-saṁhitā because they were produced from the hairs of the horse’s mane, and they were accepted in disciplic succession by the followers of Kāṇva, Mādhyandina and other ṛṣis.