Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 23

Sanskrit:

एषा घोरतमा वेला घोराणां घोरदर्शना ।चरन्ति यस्यां भूतानि भूतेशानुचराणि ह ॥ २३ ॥

ITRANS:

eṣā ghoratamā velāghorāṇāṁ ghora-darśanācaranti yasyāṁ bhūtānibhūteśānucarāṇi ha

Translation:

This particular time is most inauspicious because at this time the horrible-looking ghosts and constant companions of the lord of the ghosts are visible.

Purport:

Kaśyapa has already told his wife Diti to wait for a while, and now he warns her that failure to consider the particular time will result in punishment from the ghosts and evil spirits who move during this time, along with their master, Lord Rudra.