Śrīmad-Bhāgavatam · Text 10.20.17
Who is speaking and story frame
लोकबन्धुषु मेघेषु विद्युतश्चलसौहृदा: ।
स्थैर्यं न चक्रु: कामिन्य: पुरुषेषु गुणिष्विव ॥ १७ ॥
loka-bandhuṣu megheṣu
vidyutaś cala-sauhṛdāḥ
sthairyaṁ na cakruḥ kāminyaḥ
puruṣeṣu guṇiṣv iva
Though the clouds are the well-wishing friends of all living beings, the lightning, fickle in its affinities, moved from one group of clouds to another, like lusty women unfaithful even to virtuous men.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.