The number of the audience at the first assembly
 The Buddha said to Ananda, "The number of shravakas at the first teaching assembly of that Buddha was incalculable; so was the number of the bodhisattvas. Even if an immeasurable and uncountable number of humans multiplied by millions of kotis should all become like Mahamaudgalyayana and together reckon their number during innumerable nayutas of kalpas, or even until they attain Nirvana, they could still not know that number. Let us suppose that there is a great ocean, infinitely deep and wide, and that one takes a drop of water out of it with a hundredth part of a split hair. How would you compare that drop of water with the rest of the ocean?"
Ananda replied, "When the drop of water is compared with the great ocean, it is impossible even for one skilled in astronomy or mathematics to know the proportion, or for anyone to describe it by any rhetorical or metaphorical expressions."
The Buddha said to Ananda, "Even if people like Mahamaudgalyayana were to count for millions of kotis of kalpas, the number of the shravakas and bodhisattvas at the first teaching assembly who could be counted would be like a drop of water, and the number of sages yet to be counted would be like the rest of the ocean."