2:208
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ ٱدْخُلُوا۟ فِى ٱلسِّلْمِ كَآفَّةًۭ وَلَا تَتَّبِعُوا۟ خُطُوَٰتِ ٱلشَّيْطَٰنِ ۚ إِنَّهُۥ لَكُمْ عَدُوٌّۭ مُّبِينٌۭ
O you who have believed, enter into Islam completely [and perfectly] and do not follow the footsteps of Satan. Indeed, he is to you a clear enemy.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
Entering Islam in its Entirety is obligated
Allah commands His servants who believe in Him and have faith in His Messenger to implement all of Islam's legislation and law, to adhere to all of its commandments, as much as they can, and to refrain from all of its prohibitions. `Al-`Awfi said that Ibn `Abbas said, and also Mujahid, Tawus, Ad-Dahhak, `Ikrimah, Qatadah, As-Suddi and Ibn Zayd said that Allah's statement:
ادْخُلُواْ فِي السِّلْمِ
(Enter Silm) means Islam. Allah's statement:
كَآفَّةً
(...perfectly) means, in its entirety. This is the Tafsir of Ibn `Abbas, Mujahid, Abu Al-`Aliyah, `Ikrimah, Ar-Rabi` bin Anas, As-Suddi, Muqatil bin Hayyan, Qatadah and Ad-Dahhak. Mujahid said that the Ayah means, `Perform all the good works and the various pious deeds, this is especially addressed to those from among the People of the Scripture who embraced the faith.'