Each day in Melbourne (as he had done for years), Prabhupada worked in the very early hours of the morning, combing through the Sanskrit and Bengali Srimad-Bhagavatam commentaries of the great acaryas. Following their explanations, he would select passages from them, adding his own knowledge and realisation, and then laboriously weave it all together into his Bhaktivedanta purports. It was a great, demanding task, and required the utmost concentration.
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