It is exactly so, O best of men, as you say, Lakshmana — both the slaying of Vritra in its entirety and the fruit that is gained from the horse-sacrifice.
He was worshipped continually, O gentle delight of the Raghus, by those afflicted with fear; and the three worlds were terrified of that great-souled one whenever he was wrathful.
sa rājā tādṛśo hyāsīddharme vīrye ca niṣṭhitaḥ | buddhyā ca paramodāro bāhlīkeśo mahāyaśāḥ || 7.87.7 ||
Translation
Such indeed was that king, firmly established in righteousness and in valor, most magnanimous in understanding — the illustrious lord of Bahlika of great renown.
In that region, O lord, Hara, the unassailable one, was disporting himself with the daughter of the mountain-king (Parvati), together with all his attendants.
Wishing to please the goddess, the lord of Uma, whose banner bears the bull, had made himself into the form of a woman there, in that mountain cascade.
yacca kiñcana tatsarvaṃ nārīsañjñaṃ babhūva ha | etasminnantare rājā sa ilaḥ kardamātmajaḥ | nighnanmṛgasahasrāṇi taṃ deśamupacakrame || 7.87.14 ||
Translation
Indeed whatever existed there, all of it took on a feminine character. In the meantime that king Ila, the son of Kardama, slaying deer by the thousands, came upon that region.
When he saw that everything — together with the serpents, beasts, and birds — had been turned into female form, and that he himself along with his followers had been turned into a woman, O delight of the Raghus —
Great was his grief when he beheld himself reduced to such a state; and when he understood that this was the work of Uma's lord, he was seized with terror.
Then the king, together with his servants, his army, and his mounts, went for refuge to the great-souled god, the white-necked one who wears matted locks.
Thereupon the great lord Maheshvara, the bestower of boons, laughing along with his consort, himself the giver of boons, spoke these words to the son of Prajapati.
tataḥ sa rājā duḥkhārtaḥ pratyākhyāto mahātmanā | na ca jagrāha strībhūto varamanyaṃ surottamāt || 7.87.20 ||
Translation
Then the king, tormented by grief and refused by the great-souled god, being turned into a woman, did not accept any other boon from that best of the gods.
"O mistress, O bestower of boons, O radiant one, you are the giver of boons to the worlds; O goddess whose glance is never in vain, look upon me with a kindly eye."
"The god is the bestower of one half of the boon, and I indeed am the bestower of the other half; therefore take from your half as much of womanhood or manhood as you wish."
"O goddess, if you are pleased with me, then let me, unequalled in beauty upon the earth, dwell in womanhood for a month and then again become a man for a month."
rājanpuruṣabhūtastvaṃ strībhāvaṃ na smariṣyasi | strībhūtaśca paraṃ māsaṃ na smariṣyasi pauruṣam || 7.87.28 ||
Translation
"O king, when you are a man you shall not remember your state as a woman, and when you have become a woman, for that whole month you shall not remember your manhood."