佛說佛名經 17.4

17.4

佛告比丘：「比丘！彼諸微塵可知其數，而彼過去同名釋迦牟尼佛，已入涅槃者不可數知。

The Buddha told the bhikṣu: "Bhikṣu! The number of those dust motes could be known, but the Buddhas of the past with the identical name of Śākyamuni who have already entered nirvāṇa cannot be known by counting.