Kāmasuttaniddesa

Suttapiṭaka · Khuddakanikāya · Mahāniddesa · Vol. 29 · Section 6

[6] If, for that being (jantu) who desires sensual pleasures (kāma), in whom desire (chanda) has arisen, those sensual pleasures decline, he is afflicted, like one pierced by a dart.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.