Hanafi
The sources give no view for it here.
تملك المستقرض للشيء المقترض
هل يملك المستقرض الشيء الذي اقترضه ويحق له التصرف فيه؟
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
١١٩٦ - مَسْأَلَةٌ: وَمَنْ اسْتَقْرَضَ شَيْئًا فَقَدْ مَلَكَهُ، وَلَهُ بَيْعُهُ إنْ شَاءَ، وَهِبَتُهُ، وَالتَّصَرُّفُ فِيهِ، كَسَائِرِ مِلْكِهِ - وَهَذَا لَا خِلَافَ فِيهِ - وَبِهِ جَاءَتْ النُّصُوصُ. [مَسْأَلَةٌ الدَّيْنُ لَوْ كَانَ حَالًّا]
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.