Surah Fussilat, Verse 1

Tafsir of 41:1

Which was revealed in Makkah بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيمِ In the Name of Allah, the Most Gracious, the Most Merciful. Description of the Qur'an, and what Those Who turn away from it say. حم - تَنزِيلٌ مِّنَ الرَّحْمَنِ الرَّحِيمِ (Ha Mim. A revelation from the Most Gracious, the Most Merciful.) means, the Qur'an is revealed from the Most Gracious, Most Merciful. This is like the Ayat: قُلْ نَزَّلَهُ رُوحُ الْقُدُسِ مِن رَّبِّكَ بِالْحَقِّ (Say Ruh Al-Qudus (Jibril) has brought it down from your Lord with truth) (16:102). وَإِنَّهُ لَتَنزِيلُ رَبِّ الْعَلَمِينَ - نَزَلَ بِهِ الرُّوحُ الاٌّمِينُ - عَلَى قَلْبِكَ لِتَكُونَ مِنَ الْمُنْذِرِينَ (And truly, this is a revelation from the Lord of all that exists, Which the trustworthy Ruh (Jibril) has brought down upon your heart that you may be (one) of the warners.) (26:192-194). كِتَبٌ فُصِّلَتْ ءَايَتُهُ (A Book whereof the Ayat are explained in detail) means, its meanings are clear and its rulings are sound and wise. قُرْءَاناً عَرَبِيّاً (a Qur'an in Arabic) means, because it is a clear Arabic Qur'an, its meanings are precise and detailed and its words are clear and not confusing.…

Source: Ibn Kathir (Abridged)