PURPORT

Although in the beginning Narada Muni appeared very angry and cursed them, at the end the two demigods Nalakuvara and Manigriva were able to see the Supreme Personality of Godhead, Krsna, face to face. Thus the curse was ultimately auspicious and brilliant. One has to judge what kind of curse Narada placed upon them. Srila Visvanatha Cakravarti Thakura gives herein a good example. When a father finds his child deeply asleep but the child has to take some medicine to cure some disease, the father pinches the child so that the child will get up and take the medicine. In a similar way, Narada Muni cursed Nalakuvara and Manigriva in order to cure their disease of material blindness.