Śrīmad-Bhāgavatam · Text 10.20.46
Who is speaking and story frame
गावो मृगा: खगा नार्य: पुष्पिण्य: शरदाभवन् ।
अन्वीयमाना: स्ववृषै: फलैरीशक्रिया इव ॥ ४६ ॥
gāvo mṛgāḥ khagā nāryaḥ
puṣpiṇyaḥ śaradābhavan
anvīyamānāḥ sva-vṛṣaiḥ
phalair īśa-kriyā iva
By the influence of the autumn season, all the cows, doe, women and female birds became fertile and were followed by their respective mates in search of sexual enjoyment, just as activities performed for the service of the Supreme Lord are automatically followed by all beneficial results.
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.