Thank you so much Lal, but I was referring to whether there was a reference for “cittanupassana is not recommended for people who haven’t understood the dhamma,” or something along this line.
I was able to find that “samma sati is needed for anapanasati” quote. I’m sorry for your trouble.
Your posted excerpt does remind me of something however, which leads me to the following question: Do you have any estimation on when you’ll do your next Anapanasati-related -elephant-in-the-room article?