mathurā āsiyā — when he came to Mathurā; rāya — Subuddhi Rāya; prabhu-vārtā pāila — got information of the Lord’s itinerary; prabhura — of Lord Caitanya Mahāprabhu; lāga — contact; nā pāñā — not getting; mane — in the mind; baḍa — very great; duḥkha — unhappiness; haila — there was.