خَفْقَةٌ
1.
[A single nodding of the head, by reason of drowsiness, or dozing]: see 1, in two places: (Mgh, Msb:) a slight, or light, sleep. (TA.) It is said in a tradition respecting Ed-Dejjál [or Antichrist], يَخْرُجُ فِى خَفْقَةٍ مِنَ الدِّينِ, explained as meaning [He will come forth] in a time when religion will be drowsy, or dozing, by reason of weakness. (TA.)
2.
3.
And one says, سَيْرُ اللَّيْلِ الخَفْقَتَانِ وَسَيْرُ النَّهَارِ
البَرْدَانِ [The time of] the journeying of the night is the first part thereof and the last part thereof, and [that of] the journeying of the day is the morning, between daybreak and sunrise, and the evening, between sunset and nightfall. (TA.)
4.
See also the next paragraph, in two places.