Four instructions in a row, all of them negative
Then one that is not.
لاَ تَبَاغَضُوا، وَلاَ تَحَاسَدُوا، وَلاَ تَدَابَرُوا، وَكُونُوا عِبَادَ اللَّهِ إِخْوَانًا، وَلاَ يَحِلُّ لِمُسْلِمٍ أَنْ يَهْجُرَ أَخَاهُ فَوْقَ ثَلاَثَةِ أَيَّامٍ
Lā tabāghaḍū, wa lā taḥāsadū, wa lā tadābarū, wa kūnū ʿibāda-Llāhi ikhwānā. Wa lā yaḥillu li-muslimin an yahjura akhāhu fawqa thalāthati ayyām
Do not hate one another, do not envy one another, do not turn your backs on one another. Be servants of Allah, brothers. And it is not lawful for a Muslim to cut off his brother beyond three days.
Where this comes from
Tadābur is standing back to back, the posture of two people who have decided not to see each other. It is named alongside hatred and envy as though it were the same size of thing.
The full narration
Narrated Anas bin Malik:Allah's Messenger (ﷺ) said, "Do not hate one another, and do not be jealous of one another, and do not desert each other, and O, Allah's worshipers! Be brothers. Lo! It is not permissible for any Muslim to desert (not talk to) his brother (Muslim) for more than three days
Source
Ṣaḥīḥ al-Bukhārī · 6065
- Agreed upon as authentic (al-Bukhārī / Muslim)