Hadith: None of you (truly) believes until his personal desire complies with what I have come with

عَنْ أَبِي مُحَمَّدٍ عَبْدِ اللَّهِ بْنِ عَمْرِو بْنِ العَاصِ رَضِيَ اللَّهُ عَنْهُمَا، قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ:
«لَا يُؤْمِنُ أَحَدُكُمْ حَتَّى يَكُونَ هَوَاهُ تَبَعًا لِمَا جِئْتُ بِهِ».
[قال النووي: حديث صحيح] - [رويناه في كتاب الحجة بإسناد صحيح] - [الأربعون النووية: 41]

Abu Muhammad ‘Abdullah ibn ‘Amr ibn al-‘Ās (may Allah be pleased with him and his father) reported: The Messenger of Allah (ﷺ) said:
"None of you (truly) believes until his personal desire complies with what I have come with."
[An-Nawawi said: This is an authentic Hadīth] - [We narrated it in the book 'Al-Hujjah' with an authentic chain of narrators] - [Al-Arba‘oon An-Nawawiyyah (The Forty Hadith of An-Nawawiyyah) - 41]

Explanation

The Prophet (ﷺ) clarified that a person does not attain the complete obligatory faith until his love is in accordance with what the Messenger (ﷺ) brought of commands, prohibitions, and other matters—so that he loves what he commanded and dislikes what he forbade.

Benefits from the Hadith

1. The Hadīth represents a rule of yielding to the Shariah and submitting to it.
2. It warns us not to refer to our minds or habits for judgment and give them precedence over what the Messenger (ﷺ) came with. Imān (faith) is negated from those who act like that.
3. It is obligatory to refer for judgment to the Shariah in all matters, based on his statement: "with what I have come with."
4. Imān increases by good deeds and decreases by sins.