krsna mathuraya gele, gopira ye dasa haila
krsna-vicchede prabhura se dasa upajila
krsna mathuraya gele—when Lord Krsna departed for Mathura; gopira—of the gopis; ye dasa—which condition; haila—was; krsna-vicchede—by separation from Krsna; prabhura—of Sri Caitanya Mahaprabhu; se dasa—that situation; upajila—happened.
When Sri Caitanya Mahaprabhu felt separation from Krsna, His condition exactly corresponded to the condition of the gopis in Vrndavana after Krsna's departure for Mathura.
Link to this page: https://prabhupadabooks.com/cc/antya/14/12