Hanafi
The sources give no view for it here.
سبق اللسان في الظهار
هل يُعتبر ظهار من جرى الظهار على لسانه من غير قصد؟
Each school’s answer
In our wordsHanafi
Not stated in the sources
Maliki
Not stated in the sources
Shafi'i
Not stated in the sources
Hanbali
Not stated in the sources
The texts
د - سَبْقُ اللِّسَانِ فِي الظِّهَارِ ٦ - اخْتَلَفَ الْفُقَهَاءُ فِي اعْتِبَارِ ظِهَارِ مَنْ جَرَى عَلَى لِسَانِهِ الظِّهَارُ مِنْ غَيْرِ قَصْدٍ. وَيُنْظَرُ تَفْصِيل ذَلِكَ فِي (ظِهَارٌ ف ١٨) .
«الموسوعة الفقهية الكويتية» (Kuwait) entry «لسان» vol. 35 p. 243
From the schools’ own books
Maliki
The sources give no view for it here.
Shafi'i
The sources give no view for it here.
Hanbali
The sources give no view for it here.
What is «in our words» is our standard wording; the books’ texts stay as they are.