﴿ وَقَٰتِلُوهُمْ حَتَّىٰ لَا تَكُونَ فِتْنَةٌۭ وَيَكُونَ ٱلدِّينُ كُلُّهُۥ لِلَّهِ ۚ فَإِنِ ٱنتَهَوْا۟ فَإِنَّ ٱللَّهَ بِمَا يَعْمَلُونَ بَصِيرٌۭ ﴾

“And fight against them until there is no more oppression and all worship is devoted to God alone. And if they desist-behold, God sees all that they do;”

“And religion is wholly for God” in this connection those traditions are worth noting which are enshrined in Sahih al-Bukhari. When, after the fourth Caliph Ali ibn Abi Talib, political conflict ensued between Abdullah ibn Zubayr and the Umayyads, Abdullah ibn Umar, one of the senior-most companions of the Prophet, held himself aloof from the battle. People approached him and, quoting the verse of qital-al-fitna, asked him why he was not joining in the battle. Abdullah ibn Umar replied that ‘fitna’ as mentioned in the Quran did not refer to political infighting, but rather to the religious coercive system, that had already been put an end to by them. (Fathul Bari, 8/60 ) From this we learn that the war against fitna was a war of limited duration, temporary in nature, meant to be engaged in only until its specific purpose had been served.