Performing their ablutions in the Sarasvati, the Drisadvati and the Yamuna and went from one forest to another travelling in the westerly direction.
सरस्वतीदृषद्वत्यौ यमुनां च निषेव्य ते। ययुर्वनेनैव वनं सततं पश्चिमां दिशम्॥