Saṁyutta Nikāya 1.44 5. Ādittavagga Ekamūlasutta

“Ekamūlaṁ dvirāvaṭṭaṁ,

“One the root, two the loops,

timalaṁ pañcapattharaṁ;

three the stains, five the spreads,

Samuddaṁ dvādasāvaṭṭaṁ,

and the ocean, the twelfth whirlpool:

pātālaṁ atarī isī”ti.

such is the abyss crossed by the seer.”