Pakiṇṇaka 36

Food that is impure for bhikkhus may be pure for bhikkhunīs. Food that is impure for bhikkhunīs may be pure for bhikkhus. A bhikkhu may have a bhikkhunī offer food, but not gold, silver, money, and the five kinds of purifications of living seeds by fire (etc.). Fruits have to be made allowable for consumption by monastics through a procedure that symbolically damages the seeds. This can be done with five methods, one of them being with fire.* A bhikkhunī may accept food from a bhikkhu, but not gold, silver, money, and the five kinds of purifications of living seeds by fire (etc.).