Surah Taha 20:21

قَالَ خُذْهَا وَلَا تَخَفْ ۖ سَنُعِيدُهَا سِيرَتَهَا ٱلْأُولَىٰ

[Allāh] said, "Seize it and fear not; We will return it to its former condition.

Translation: Saheeh International

Tafsir

He said ‘Take hold of it and do not fear it. We will restore it to its former state sīratahā in the accusative because the genitive-operating preposition has been removed. And so he placed his hand in its mouth and it became a staff once again; …

Excerpt from Tafsir al-Jalalayn, commentary on 20:21, via Quran.com. The reader has the full commentary and 9 more tafsirs.