Om Param Tatvaay Narayanaay Gurubhyo Namaha
Dear Gurubhai,
It Is Said That In Order To Worship A Mother U Dont Need A permission From Guru.but Dakshina Kaali Mantra Is A Tantrik Mantra And I Think You Need A Diksha For It.If You Are A Regular Worshipper Of Mother Then Go Ahead.
Jai Gurudev.