SB 10.90.20
megha srimams tvam asi dayito yadavendrasya nunam
srivatsankam vayam iva bhavan dhyayati prema-baddhah
aty-utkanthah savala-hrdayo ’smad-vidho baspa-dharah
smrtva smrtva visrjasi muhur duhkha-das tat-prasangah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O revered cloud, you are indeed very dear to the chief of the Yadavas, who bears the mark of Srivatsa. Like us, you are bound to Him by love and are meditating upon Him. Your heart is distraught with great eagerness, as our hearts are, and as you remember Him again and again you shed a torrent of tears. Association with Krsna brings such misery!
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The acaryas explain this verse as follows: The cloud acts as the friend of Lord Krsna by shielding Him from the scorching rays of the sun, and certainly such an earnest well-wisher of the Lord must constantly meditate on Him with concern for His welfare. Although the cloud shares the Lord’s blue complexion, it is Lord Krsna’s distinctive features, such as His Srivatsa mark, that especially attract him to this meditation. But what is the result? Simply unhappiness: the cloud is depressed and thus constantly sheds tears on the pretext of raining. “So,” the queens advise him, “it would be better for you not to take much interest in Krsna.”