Is the reward of a qirat for the number of funeral prayers offered, or for the number of prayers performed?

We hope the prayer receives Qirats for each funeral prayer, based on the Prophet's (peace be upon him) saying: "Whoever prays over a funeral will have one Qirat, and whoever follows it until it is buried will have two Qirats." This indicates that the Qirats multiply with the number of funeral prayers. And whoever prays over it and follows it until its burial is completed will receive two Qirats.