|Canto 10: The Summum Bonum||Chapter 20: The Rainy Season and Autumn in Vṛndāvana|
Bhaktivedanta VedaBase: Śrīmad Bhāgavatam 10.20.46
gāvo mṛgāḥ khagā nāryaḥ
phalair īśa-kriyā iva
gāvaḥ — the cows; mṛgāḥ — the female deer; khagāḥ — the female birds; nāryaḥ — the women; puṣpiṇyaḥ — in their fertile periods; śaradā — because of the autumn; abhavan — became; anvīyamānāḥ — followed; sva-vṛṣaiḥ — by their respective mates; phalaiḥ — by good results; īśa-kriyāḥ — activities performed in service to the Supreme Lord; iva — as.
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.
Śrīla Prabhupāda comments, "On the arrival of the autumn season, all the cows, deer, birds and females in general become pregnant, because in that season generally all the husbands become impelled by sex desire. This is exactly like the transcendentalists who, by the grace of the Supreme Lord, are bestowed with the benediction of their destinations in life. Śrīla Rūpa Gosvāmī has instructed in his Upadeśāmṛta that one should perform devotional service with great enthusiasm. patience and conviction and should follow the rules and regulations, keep oneself clean from material contamination and stay in the association of devotees. By following these principles, one is sure to achieve the desired result of devotional service. For he who patiently follows the regulative principles of devotional service, the time will come when he will achieve the result, as the wives reap results by becoming pregnant."
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His Divine Grace A. C. Bhaktivedanta Swami Prabhupāda, Founder Ācārya of the International Society for Krishna Consciousness
His Holiness Hrdayananda dasa Goswami
Gopiparanadhana dasa Adhikari
Dravida dasa Brahmacari