- vajras tu tat-kandharam āśu-vegaḥ
- kṛntan samantāt parivartamānaḥ
- nyapātayat tāvad ahar-gaṇena
- yo jyotiṣām ayane vārtra-hatye
vajraḥ—the thunderbolt; tu—but; tat-kandharam—his neck; āśu-vegaḥ—although very fast; kṛntan—cutting; samantāt—all around; parivartamānaḥ—revolving; nyapātayat—caused to fall; tāvat—so many; ahaḥ-gaṇena—by days; yaḥ—which; jyotiṣām—of the luminaries like the sun and moon; ayane—in moving to both sides of the equator; vārtra-hatye—at the time suitable for killing Vṛtrāsura.
Although the thunderbolt revolved around Vṛtrāsura's neck with great speed, separating his head from his body took one complete year—360 days, the time in which the sun, moon and other luminaries complete a northern and southern journey. Then, at the suitable time for Vṛtrāsura to be killed, his head fell to the ground.