1v.68 "From where do the streams turn back?
Where does the round no longer revolve?
Where does name-and-form cease,
Stop without remainder?"

2v.69 "Where water, earth, fire, and air,
Do not gain a footing:
It is from here that the streams turn back,
Here that the round no longer revolves;
Here name-and-form ceases,
Stops without remainder." [n.52] Spk: The question refers to the "streams" of saṁsara, the answer to Nibbāna. Portions of the reply can be found at DN11 and Ud 9,4. On the stopping of the streams, see Sn1034–37, and on the round not revolving see the expression vaṭṭaṁ … natthi paññapanaya at and SN44.6.

1"Kuto sarā nivattanti,
kattha vaṭṭaṁ na vattati;
Kattha nāmañca rūpañca,
asesaṁ uparujjhatī"ti.

2"Yattha āpo ca pathavī,
tejo vāyo na gādhati;
Ato sarā nivattanti,
ettha vaṭṭaṁ na vattati;
Ettha nāmañca rūpañca,
asesaṁ uparujjhatī"ti.