He seeks the accomplishment of some object that depends upon your help. As the bird called Chataka, which if fond of rain, waits in earnest expectation of a shower, so is that Brahmana waiting is expectation of a meeting with you.
स हि कार्यान्तराकाङ्क्षी जलेप्सुः स्तोकको यथा। वर्ष वर्षप्रियः पक्षी दर्शनं तव कासति॥