And if they break their oaths after their treaty and defame your (9:12)

Almuntakhab Fi Tafsir Alquran Alkarim

But should they infringe their oaths after they have pledged their vows to you, and assailed your religion with opprobrious or abusive language, then you must battle against the ring-leaders of bigotry whose professed system of faith is featured in idolatry and infidelity, for then they will have proved themselves of a faithless disposition, false to the vows. They may with such calculated punishment desist, for their own sake, from their hostile course of action

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(9:12) But if they break their oaths after making compacts and revile your Faith you should fight with these ringleaders of disbelief because their oaths are not trustworthy: it may be that sword alone will restrain *14a them. *15

And if they break their oaths after their treaty and defame your meaning

*15) In the context,the words, oaths and compacts mean the compact of the acceptance of Islam. Therefore, the question of making a new compact with them does not arise. As regards the old pacts, they had already broken all of them. It is on account of this that the declaration of immunity (from obligations) by Allah and His Messenger has been clearly made. It has also been stated that such people are not worthy of any treaty and they can only be let off if they repent of their disbelief and shirk and establish Salat and pay Zakat dues. This verse states clearly how the renegades should be treated. As a matter of fact, .this verse forestalled the mischief of apostasy that broke out a year and a half after its revelation and Hadrat Abu Bakr followed the guidance given in this verse to crush it. (For further explanation, see my book entitled Murtad ki Saza Islami Qanun men).
 

And if they break their oaths after their treaty and defame your meaning in Urdu

اور اگر عہد کرنے کے بعد یہ پھر اپنی قسموں کو توڑ ڈالیں اور تمہارے دین پر حملے کرنے شروع کر دیں تو کفر کے علمبرداروں سے جنگ کرو کیونکہ ان کی قسموں کا اعتبار نہیں شاید کہ (پھر تلوار ہی کے زور سے) وہ باز آئیں گے