Kapijātaka

Suttapiṭaka · Khuddakanikāya · Jātaka (1) · Vol. 27 · Section 1029

[1029] A person of fickle mind (lahucitta), who readily goes along with others, truly does an enemy's (disa) work; because of a single monkey, ruin was wrought upon the whole troop.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.