In plain words
The aim of this Toṭaka was the essence of all learning. He went on entrusting his life to the truth called the search for the Ātma. All the other disciples put what was in the books into their heads and turned their heads, too, into books; but Toṭaka was not like that: just as a bee goes and feeds from the lotus of the heart on the essence that is the guru's grace, so he became one who drank that nectar of grace from the guru's heart. This very thing:
Having studied every kind of learning and grown very discerning, the dull of mind still does not know himself; however much learning he gains, in whatever way he lives, the base man cannot give up his failings; study and study again, and it is only argument and debate; he never attains the full Jñāna. Why study all learning only to die? You must study the learning that knows no death.
— that is how he understood it. That is precisely why he said it is enough if we read even once the Bhagavad Gītā, which has drunk in the essence of the sacred culture of Bhārata. A person who has grown hungry need not eat for himself all the crops grown in the world. On the principle that it is enough if a handful of rice comes to his span-wide belly, we need not recite the whole of the Bhagavad Gītā. That Toṭaka believed it is enough if we put a single śloka into practice. Not only this: a person who has fallen ill need not swallow all the medicines developed in the world under crores of names. It is enough if he takes the one medicine that suits his illness. The illness is cured. Keeping that same aim in view, he said, ‘Gītā gaṅgodakaṃ pītvā punarjanma na vidyate.’ When you are thirsty, it is enough to drink one tumbler of water; you need not pour the whole river Gaṅgā into your stomach. In the same way this Toṭaka, Ānandagiri, held the firm faith: ‘If just one ray of the grace of God shines on my heart, it is enough; I can show this whole world, too, to be one all-powerful embodiment of the Ātma.’