法苑珠林 38.10

38.10

又雜寶藏經云。若掃僧房一閻浮提地。不如掃佛塔一手掌（成論亦同）。

Furthermore, the Za baozang jing says: "Sweeping the monks' quarters across the entire Jambudvīpa is not as good as sweeping a palm-sized area of a Buddha stūpa (the Chengshi lun says the same)."