Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 34

Sanskrit:

यद्यसत्यं वच: शम्भो: कथञ्चिद् दानवर्षभ ।तदैनं जह्यसद्वाचं न यद वक्तानृतं पुन: ॥ ३४ ॥

yady asatyaṁ vacaḥ śambhoḥkathañcid dānavarṣabhatadainaṁ jahy asad-vācaṁna yad vaktānṛtaṁ punaḥ

If the words of Lord Śambhu prove untrue in any way, O best of the demons, then kill the liar so he may never lie again.

Lord Śiva may have the power to revive himself even after being killed, but at least he will be dissuaded from lying again.