Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:13:39 –

Allah eliminates what He wills or confirms, and with Him is the Mother of the Book.  

God effaces, of it ˹the Book˺, whatever He will and He fixes (read yuthbit or yuthabbit), therein whatever He will of rulings or other matters, and with Him is the Mother of the Book, its ˹source of˺ origin, of which nothing is ever changed, and which consists of what He inscribed in pre-eternity (azal).
القرآن:١٣:٣٩ –

يَمْحُو اللَّهُ مَا يَشَاءُ وَيُثْبِتُ ۖ وَعِنْدَهُ أُمُّ الْكِتَابِ  

{يمحو الله} منه {ما يشاء ويثبت} بالتخفيف والتشديد فيه ما يشاء من الأحكام وغيرها {وعنده أم الكتاب} أصله الذي لا يتغير منه شيء وهو ما كتبه في الأزل.