Caitanya-caritāmṛta 18.222
ei-mata cali‘ prabhu ‘prayāga’ āilā daśa-dina triveṇīte makara-snāna kailā
[ei-mata chali‘ prabhu ‘prayaaga’ aailaa dasha-dina triveneete makara-snaana kailaa]
Blended reading (Sanskrit + English inline)
ei-mata cali‘ prabhu ‘prayāga’ āilā daśa-dina triveṇīte makara-snāna kailā
Śrī Caitanya Mahāprabhu finally arrived at Prayāga and for ten successive days bathed in the confluence of the rivers Yamunā and Ganges during the festival of Makara-saṅkrānti [Māgha-melā].
Purport
Actually the word triveṇī indicates the confluence of three rivers — namely the Ganges, Yamunā and Sarasvatī. Presently the Sarasvatī River is not visible, but the river Ganges and the river Yamunā merge at Allahabad.
— A.C. Bhaktivedanta Swami Prabhupāda
My note
Source: vedabase.io