It was so observed by Vidura that Uddhava had all the transcendental bodily changes due to total ecstasy, and he was trying to wipe away tears of separation from his eyes. Thus Vidura could understand that Uddhava had completely assimilated extensive love for the Lord.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
पुलकोद्भिन्नसर्वाङ्गो मुञ्चन्मीलद्दृशा शुचः । पूर्णार्थो लक्षितस्तेन स्नेहप्रसरसम्प्लुतः
pulakodbhinnasarvāṅgo muñcanmīladdṛśā śucaḥ | pūrṇārtho lakṣitastena snehaprasarasamplutaḥ
SB 3.2.5