SB 11.29.36
vistabhya cittam pranayavaghurnam
dhairyena rajan bahu-manyamanah
krtañjalih praha yadu-praviram
sirsna sprsams tac-caranaravindam
Translation:
Steadying his mind, which had become overwhelmed with love, Uddhava felt extremely grateful to Lord Krsna, the greatest hero of the Yadu dynasty. My dear King Pariksit, Uddhava bowed down to touch the Lord’s lotus feet with his head and then spoke with folded hands.
Purport:
According to Srila Jiva Gosvami, the fear of separation from Lord Krsna was continually entering the mind of Sri Uddhava, and thus he tried to maintain his enthusiasm by remembering the Lord’s great kindness upon him. He steadied his mind with feelings of gratitude toward the Lord.