Where does this shloka about epidemic appear in Narada Samhita?

भूपाव हो महारोगो मध्य स्यार्धवृष्ट य। दुखिनो जंत्व सर्वे वत्स रे परी धाविनी

There are lot of videos and articles (for example, this one) relating this Shloka with currently going on epidemic (Corona Virus / COVID-19).

Where does this shloka about epidemic appear in Narada, Vashishtha or Vrahta Samhita?

भूपाव हो महारोगो मध्य स्यार्धवृष्ट य। दुखिनो जंत्व सर्वे वत्स रे परी धाविनी

There are lot of videos and articles (for example, this one or this video snapshot (3.48)) relating this Shloka with currently going on epidemic (Corona Virus / COVID-19).