Imam Sadiq (a.s) quoted on the authority of the Prophet of God (a.s)
“Erase the name of God, and the verses of the Holy Scripture only with the cleanest thing available.” He ordered not to burn them or cross out the verses by writing over them.
عنه (عليه السلام) قال
قال رسول الله (صلى الله عليه وآله): امحوا كتاب الله وذكره بأطهر ما تجدون، ونهى رسول الله (صلى الله عليه وآله) أن يحرق كتاب الله، ونهى أن يمحى بالأقدام.
Similar narrations
Al-Kāfi #2342“The Messenger of Allah has said, ‘You may delete (writing of) the book of Allah, the Most High and words mentioning Him with the cleanest...