This is a genuine Buddha quote.

As a water bead on a lotus leaf,
as water on a red lily,
does not adhere,

so the sage
does not adhere
to the seen, the heard, or the sensed.

It’s from the Jara (old age) Sutta of the Sutta Nipata.

In the original Pali this is:

Udabindu yathāpi pokkhare
Padume vāri yathā na lippati,
Evaṃ muni no palippati
Yadidaṃ diṭṭhasutaṃ mutesu vā.