سورة التوبة

Imam Baqir (peace be upon him): إِلاَّ أَنْ تَقَطَّعَ قُلُوبُهُمْ وَ اللهُ عَلیمٌ حَکیمٌ [except that their hearts get cut into pieces; and Allah is Knowing, Wise]; إِلاَّ here means حَتّی [until]. The Messenger of Allah (peace be upon him and his family) sent Malik ibn Dukhshum al-Khuzai and Amir ibn Adi from Banu Amr ibn Awf to destroy it and set it on fire. Malik came and said to Amir: "Wait for me until I bring fire from my house," then he entered his house and brought a palm leaf, then set it aflame in the mosque. So they scattered. Zayd ibn Haritha remained there until the building of the mosque caught fire. Then he ordered that its walls be torn down.

Imam Ali (peace be upon him): As for the verses in which, on their surface, one word has been used in place of another, this verse is such: لا یَزالُ بُنْیانُهُمُ الَّذِی بَنَوْا رِیبَةً فِی قُلُوبِهِمْ إِلَّا أَنْ تَقَطَّعَ قُلُوبُهُمْ [The building which they built will ever remain a source of disquiet in their hearts, except that their hearts get cut into pieces], the meaning of which is إِلَی أَنْ تَقَطَّعَ قُلُوبُهُمْ [until their hearts get cut into pieces]; and examples of it in the Quran are many.

Imam Sadiq (peace be upon him): إِلَّا أَنْ تَقَطَّعَ [except that they get cut]; until it was severed.