Caitanya-caritāmṛta 25.208
māsa-mātra rūpa-gosāñi rahilā vṛndāvane śīghra cali’ āilā sanātanānusandhāne
[maasa-maatra roopa-gosaani rahilaa vrindaavane sheeghra chali’ aailaa sanaatanaanusandhaane]
Blended reading (Sanskrit + English inline)
māsa-mātra rūpa-gosāñi rahilā vṛndāvane śīghra cali’ āilā sanātanānusandhāne
Rūpa Gosvāmī remained in Mathurā and Vṛndāvana for one month in the association of Subuddhi Rāya. After that, he left Vṛndāvana to search for his elder brother, Sanātana Gosvāmī.
My note
Source: vedabase.io