Shiva Purana

siva.sh/siva-purana/rudra-samhita/79/25

न मया तारको वध्यो हरिणापि हरेण च।। नान्येनापि सुरैर्वापि मद्वरात्सत्यमुच्यते।।२५।।

sanskrit

Thanks to the power of the boon granted by me. Tāraka cannot be killed by me or by Viṣṇu or by Śiva or by any one of the gods. It is true.

english translation

na mayA tArako vadhyo hariNApi hareNa ca|| nAnyenApi surairvApi madvarAtsatyamucyate||25||

hk transliteration by Sanscript