the day, had an opportunity to make amends during the night.

Muhammad said: His saying "in succession" (khilfatan) means that one succeeds the other. Similar to this is the saying of Zuhayr:

(In it, the large-eyed gazelles and the white antelopes walk in succession... and their young rise from every resting place)

Al-rim (the white antelope) is the young of the gazelle, and its plural is arām. He means: when one group departs, another group comes.

Surah Al-Furqan from (verse 63 to verse 67).