Gumbiyajātaka

Suttapiṭaka · Khuddakanikāya · Jātaka (1) · Vol. 27 · Section 779

[779] Those who, thinking "It is honey," tasted that poison — for them it turned bitter; thereby they met with death.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.