One verse

Srimad Bhagavatam 10.90.42

10.90.42

सङ्ख्यानं यादवानां क: करिष्यति महात्मनाम् । यत्रायुतानामयुतलक्षेणास्ते स आहुक: ॥ ४२ ॥

saṅkhyānaṁ yādavānāṁ kaḥ kariṣyati mahātmanām yatrāyutānām ayuta- lakṣeṇāste sa āhukaḥ

saṅkhyānam
the counting
yādavānām
of the Yādavas
kaḥ
who
kariṣyati
can do
mahā-ātmanām
of the great personalities
yatra
among whom
ayutānām
of tens of thousands
ayuta
(times) ten thousand
lakṣeṇa
with (three) hundred thousand (persons)
āste
was present
saḥ
he
āhukaḥ
Ugrasena

Who can count all the great Yādavas, when among them King Ugrasena alone was accompanied by an entourage of thirty trillion attendants?