Al-Baqarah 2:37

Fatalaqqa adamu min rabbihikalimatin fataba AAalayhi innahu huwa attawwabuarraheem

Then Adam received from his Lord [some] words, and He accepted his repentance. Indeed, it is He who is the Accepting of Repentance, the Merciful.

Then ’Ādam learned certain words (to pray with) from his Lord; so, Allah accepted his repentance. No doubt, He is the Most-Relenting, the Very-Merciful.