Hanafi
The sources give no view for it here.
إنكاح الفضولي
هل يصح عقد النكاح الذي يجريه الفضولي أم يبطل؟
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
إِنْكَاحُ الْفُضُولِيِّ: ١١٤ - اخْتَلَفَ الْفُقَهَاءُ فِي إِنْكَاحِ الْفُضُولِيِّ فَمِنْهُمْ مَنْ أَبْطَلَهُ وَمِنْهُمْ مَنْ جَعَلَهُ مَوْقُوفًا. وَالتَّفْصِيل فِي مُصْطَلَحِ: (فُضُولِيّ ف ٨) .
«الموسوعة الفقهية الكويتية» (Kuwait) entry «نكاح» vol. 41 p. 294
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.