I just saw Durga Chalisa for the first time in my life. I never heard about it before. I am a practising Shakta. But still, I never heard about it. Here is a link. It is in Hindi. What is the source of Durga Chalisa.?
I know that Hanuman Chalisa is part of Tulisidasa's rendition of Ramayana. But, what about Durga Chalisa.? Part of which scripture.?