Srimad Bhagavatam Canto 10, Chapter 13, Text 34

SB 10.13.34

tatah pravayaso gopas
tokaslesa-sunirvrtah
krcchrac chanair apagatas
tad-anusmrty-udasravah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Thereafter the elderly cowherd men, having obtained great feeling from embracing their sons, gradually and with great difficulty and reluctance ceased embracing them and returned to the forest. But as the men remembered their sons, tears began to roll down from their eyes.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
In the beginning the cowherd men were angry that the cows were being attracted by the calves, but when the men came down from the hill, they themselves were attracted by their sons, and therefore the men embraced them. To embrace one’s son and smell his head are symptoms of affection.
Srimad Bhagavatam Canto 10, Chapter 13, Text 33
Srimad Bhagavatam Canto 10, Chapter 13, Text 35