Bhagavatapurana 10.9.2

2. And at the time of churning the curd, she recollected and herself sang those several acts of Krishna as a child which were (popularly) sung there (at Vraja).

3. Clad in silken cloth fastened with a zone round her big waist, with her shaking bosom that overflowed from affection for her son, with her earrings set in motion as well as the bangles on her arms tired with pulling the rope to and fro, the face bedewed with drops of sweat and jassamine blossoms dropping from her braid, she went on churning.