Pucimandavagga

Suttapiṭaka · Khuddakanikāya · Jātaka (1) · Vol. 27 · Section 544

[544] "You, O Assattha, do not know the matter between me and the thief: kings, when they have seized a thief, a doer of wicked deeds in the village, impale him on a stake of nimba wood — it is on that account that my mind is apprehensive."

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.