SB 11.17.3-4

purā kila mahā-bāho
 dharmaṁ paramakaṁ prabho
yat tena haṁsa-rūpeṇa
 brahmaṇe ’bhyāttha mādhava
sa idānīṁ su-mahatā
 kālenāmitra-karśana
na prāyo bhavitā martya-
 loke prāg anuśāsitaḥ
Synonyms: 
purā — previously; kila — indeed; mahā-bāho — O mighty-armed one; dharmam — religious principles; paramakam — bringing the greatest happiness; prabho — my Lord; yat — which; tena — by that; haṁsa-rūpeṇa — in the form of Lord Haṁsa; brahmaṇe — unto Lord Brahmā; abhyāttha — You spoke; mādhava — my dear Mādhava; saḥ — that (knowledge of religious principles); idānīm — presently; su-mahatā — after very long; kālena — time; amitra-karśana — O subduer of the enemy; na — not; prāyaḥ — generally; bhavitā — will exist; martya-loke — in human society; prāk — previously; anuśāsitaḥ — instructed.
Translation: 
My dear Lord, O mighty-armed one, previously in Your form of Lord Haṁsa You spoke to Lord Brahmā those religious principles that bring supreme happiness to the practitioner. My dear Mādhava, now much time has passed, and that which You previously instructed will soon practically cease to exist, O subduer of the enemy.