«تَزَوَّجْتُكِ عَلَى هَذَا أَلْفَ دِرْهَمٍ أَوْ عَلَى هَذَا مِائَةَ دِينَارٍ»
“I marry you with a thousand dirhams on this basis, or one hundred dinars on that basis.”
When alternative dowers are named without specifying which one is due, the legal issue is the validity of the designation. The source discusses recourse to the customary equivalent dower (mahr al-mithl) in Imam Abu Hanifa's treatment, because the alternatives do not complete a clear designation.
The duty of a dower and a valid specification of its amount or object are distinct. Aw by itself does not resolve all contractual conditions.