Temporary Marriage Mahr Should Be of a Monetary Value

Q1: Is it permissible that the mahr agreed upon in a temporary marriage be reciting some Qur’anic verses and giving the reward to the wife as a gift? Or it should be a material and tangible thing.

Q2: If not, then in case that a girl had conducted temporary marriage several times and in every time her mahr was just reciting certain chapter of the Qur’an and giving its reward to her as a gift, is her previous marriage contract ruled null?
And is the sexual intercourse they did considered as fornication?

A1: Mahr of a temporary marriage should either be money/property or something of monetary value like teaching [her] a craft or how to read or the like and just giving her the reward of reading Qur’an cannot replace that.

A2: All the previously settled contracts, mentioned in the question, are void. The subsequently happened sexual relationships — if the two partners were ignorant of contract/s nullity — were not ruled as harām, rather they were ruled as mistakenly done coitus. If sexual intercourse and penetration have taken place after those void contracts while the wife was not aware of their nullity, she has the right to claim (mahr al-mithl) — mahr of women with the same station — from the husband.