Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 13
Sanskrit:
सहदेवं दक्षिणस्यामादिशत् सह सृञ्जयै: ।दिशि प्रतीच्यां नकुलमुदीच्यां सव्यसाचिनम् ।प्राच्यां वृकोदरं मत्स्यै: केकयै: सह मद्रकै: ॥ १३ ॥
ITRANS:
sahadevaṁ dakṣiṇasyāmādiśat saha sṛñjayaiḥdiśi pratīcyāṁ nakulamudīcyāṁ savyasācinamprācyāṁ vṛkodaraṁ matsyaiḥkekayaiḥ saha madrakaiḥ
Translation:
He sent Sahadeva to the south with the Sṛñjayas, Nakula to the west with the Matsyas, Arjuna to the north with the Kekayas, and Bhīma to the east with the Madrakas.