Can a man recite a surah of the Quran as a mahr for his wife in temporary or permanent marriage ?

If a man teaches a lady the Quran or a sura in the Quran that can be counted as Mahr. The Mahr has to have a monetary value according to the Urf, (the common understanding of people). If the thawab of a sura has monetary value it is accepted. If it doesn’t then he has to give her another dowry of an average Mahr