AT TAUBAH — Ayat 5
فَإِذَا انسَلَخَ الأَشْهُرُ الْحُرُمُ فَاقْتُلُواْ الْمُشْرِكِينَ حَيْثُ وَجَدتُّمُوهُمْ وَخُذُوهُمْ وَاحْصُرُوهُمْ وَاقْعُدُواْ لَهُمْ كُلَّ مَرْصَدٍ فَإِن تَابُواْ وَأَقَامُواْ الصَّلاَةَ وَآتَوُاْ الزَّكَاةَ فَخَلُّواْ سَبِيلَهُمْ إِنَّ اللّهَ غَفُورٌ رَّحِيمٌ
And when the sacred months have passed, then kill the polytheists wherever you find them and capture them and besiege them and sit in wait for them at every place of ambush. But if they should repent, establish prayer, and give zakah, let them [go] on their way. Indeed, Allah is Forgiving and Merciful.
Tafsir Ibnu Katsir
فَإِذَا انسَلَخَ الأَشْهُرُ الْحُرُمُ فَاقْتُلُواْ الْمُشْرِكِينَ حَيْثُ وَجَدتُّمُوهُمْ وَخُذُوهُمْ وَاحْصُرُوهُمْ وَاقْعُدُواْ لَهُمْ كُلَّ مَرْصَدٍ فَإِن تَابُواْ وَأَقَامُواْ الصَّلَوةَ وَءاتَوُاْ الزَّكَوةَ فَخَلُّواْ سَبِيلَهُمْ إِنَّ اللَّهَ غَفُورٌ رَّحِيمٌ
5. So when the Sacred Months have passed, then fight the Mushrikin wherever you find them, and capture them and besiege them, and lie in wait for them in each and every ambush. But if they repent and perform the Salah, and give the Zakah, then leave their way free. Verily, Allah is Oft-Forgiving, Most Merciful. Mujahid, `Amr bin Shu`ayb, Muhammad bin Ishaq, Qatadah, As-Suddi and `Abdur-Rahman bin Zayd bin Aslam said that the four months mentioned in this Ayah are the four-month grace period mentioned in the earlier Ayah,