Surah Al-A'raf, ayah 107

7:107

فَأَلۡقَىٰ عَصَاهُ فَإِذَا هِيَ ثُعۡبَانٞ مُّبِينٞ ١٠٧

Fa alqā 'asāhu fa idhā hiya thu'bānum mubīn

So he [i.e., Moses] threw his staff, and suddenly it was a serpent, manifest.392

Footnotes

392 i.e., genuine and not imagined, as a miracle from Allāh.