The constellations named Krttika were all wives of the moon-god. However, because Prajapati Daksa had cursed him to suffer from a disease causing gradual destruction, the moon-god could not beget children in any of his wives

Expressions researched:
"the constellations named Krttika were all wives of the moon-god. However, because Prajapati Daksa had cursed him to suffer from a disease causing gradual destruction, the moon-god could not beget children in any of his wives"

SB Canto 6

O Mahārāja Parīkṣit, best of the Bhāratas, the constellations named Kṛttikā were all wives of the moon-god. However, because Prajāpati Dakṣa had cursed him to suffer from a disease causing gradual destruction, the moon-god could not beget children in any of his wives.

SB 6.6.23, Translation and Purport:

O Mahārāja Parīkṣit, best of the Bhāratas, the constellations named Kṛttikā were all wives of the moon-god. However, because Prajāpati Dakṣa had cursed him to suffer from a disease causing gradual destruction, the moon-god could not beget children in any of his wives.

Because the moon-god was very much attached to Rohiṇī, he neglegted all his other wives. Therefore, seeing the bereavement of these daughters, Prajāpati Dakṣa became angry and cursed him.