compiled from the vani of Srila Prabhupada
16 ROUNDS ABSOLUTELY NECESSARY IN ORDER TO REMEMBER KRSNA ALWAYS
So far as your question about arranging time, our first business is to regularly complete our chanting 16 rounds each day.
Letter to: Kirtanananda — Los Angeles 2 December, 1968
My advise is always chant 16 rounds minimum and follow the four regulative principles. All of my disciples must agree on this point otherwise they are not my disciples. Let one live anywhere, but stick to the principles. Disagreements will continue in this material world. So one may live in a suitable place, but one must follow these five principles. My disciples must follow these principles living either in heaven or hell.
Letter to: Raja Laksmi — Mayapur 17 February, 1976