Bhakti-rasāmṛta-sindhu .2.165
Blended reading (Sanskrit + English inline)
In addition to jubilation, there are sometimes symptoms of disappointment. Pradyumna once addressed Sāmba with these words: “My dear Sāmba, you are such a glorified personality! I have seen that once when you were playing on the ground, your body became covered with dust; yet our father, Lord Kṛṣṇa, still took you up on His lap. But I am so unfortunate that I could never get such love from our father!” This statement is an example of disappointment in love.
Śambara-mayaiḥ means “by the portions of Śambara.” (Śambara could assume any form he wanted. Assuming such a form, he stole Pradumnya when he was ten days old and threw him in the ocean. Thus Pradumnya did not meet His father for some time after his birth.)
My note
Source: vedabase.io