Sri Matre Namaha
Nakadidhiti-sanchanna-namajjana-tamoguna – The forty fourth name in Lalitha Sahasranamam.
nakhanam didhitibhih samyak channo namatam jananam tamogunah yasyah sa
The radiance of her nails veils the ignorance (in the form of darkness) of those people who reverently bow down (at her feet).
The rays of her nails remove the ignorance of those who bow before her. When devas and asuras pay their reverence to her by bowing, the rays of the gems emanating from their crowns are in no comparison to the rays emanating from the nails of her feet. The rays that come out of the nails destroy the tamo guna and ignorance of those who worship her. It is also said that She does not bless with her hands, but with Her feet. She does not have abhayam and varadam hands. Normally you can notice that most of the Gods have these two hands one meant for blessings and another for giving boons. Lalitha does not have these two hands as She has four powerful goddesses (8, 9, 10 and 11) in her four hands. These two acts blessings and giving boons are done by her feet. (study of body parts).
Reference Matsya Purana and Padma P, Narada interprets the birth (bodily) marks of Parvati to her mother Mena: “a husband is yet to be born for her. O lady! she will be devoid of good bodily marks ( because she is an unconditioned one) and she will always have her hand raised. An her feet will err by her own shadow. What more should be said? Himavan hearing these (bad) marks addresses Narada with sorrow for which Narada says, “when you have an occasion for great joy why should you manifest sorrow? O Great mountain! you are bewildered because you did not understand my speech”. After explaining the meaning of “no husband is born yet” etc., he says I will explain what I mean by saying her feet will err by their own shadow. O the best of Mountains, Her feet are like lotuses, shining with bright nails. When the Devas and Asura prostrate before her the various colors of their jeweled crowns will drive away the rays of her nails which entering their hearts will dispel their tamas quality.