What is the legal interpretation of a bequest specifying 'twice my son's share' (ضعفي نصيب ابني)?
General Chapter
Al-Mughni
Book of Bequests
Primary text
If a testator states, 'I bequeath to you twice my son's share,' the beneficiary receives a quantity equivalent to the son's share (i.e., one time the son's share). This is the correct view, held by Abu Ubayd.
Supporting text
The Shafi'is maintain that if the bequest is 'twice' (ضعفين), the beneficiary receives three times the son's share. Similarly, if the bequest is 'three times the portion' (ثلاثة أضعافه), they receive four times the portion, following the principle that each added 'time' increases the total multiplier by one.