7th Nakshatra from any Nakshatra is its Naidhana Tara and this nakshatra is considered inauspicious while matching horoscopes for marraige.
The Author of Kaala Prakaasika however , discusses in detail about the compatibility of Nakshatra and its Naidhana tara of the first Navaka ( Triad - first set of 9 nakshatras from janma nakshatra). He approves marraige with brides/grooms who has the naidhana tara as their janma tara in some instances.
Above table shows the Compatibility between nakshatras and their naidhana taras. Some Naidhana Taras are beneficial and need not be rejected for marraige as per him.
For example : Naidhana Tara for Moola nakshatra is Poorva Bhadrapada. Marraige between the Couple belonging to the above two nakshatras gives more prosperity. Hence marraige can be performed if all the other factors support.
