Detail of the title page of a fragmented 11th-century Qaraite commentary (BL Or. 2563) on Deuteronomy (אֵלֶּה הַדְּבָרִים = ايلّا هَدّباريم). It says that it's a summary of another commentary and of an abridged version of a third commentary. View the digitised manuscript here: https://www.nli.org.il/en/discover/manuscripts/hebrew-manuscripts/viewerpage?vid=MANUSCRIPTS#d=[[PNX_MANUSCRIPTS990001208160205171-1,FL31492767]]