"It is known that excepting the first forty labas of the dark twilight that proceeds night, (the other portion of the night) is set apart for the Yakshas, the Gandharvas and the Rakshasas who are capable of going every where at will. The rest of the time is set apart for men.
स दृष्ट्वा पाण्डवांस्तत्र सह मात्रा परंतपान्। विस्फारयन् धनुर्घोरमिदं वचनमब्रवीत्॥ संध्या संरज्यते घोरा पूर्वरात्रगमेषु या। अशीतिभिर्लवैीनं तन्मुहूर्तं प्रचक्षते॥