法苑珠林 37.28

37.28

又涅槃經云。若於佛法僧供養一香燈。乃至獻一華則生不動國。善守佛僧物塗掃僧佛地。造像塔如母指。常生歡喜心。亦生不動國。此即淨土常嚴不為三災所動也。

Furthermore, the Nirvāṇa-sūtra says: If one makes an offering to the Buddha, Dharma, and Saṅgha of a single stick of incense or a lamp, or even presents a single flower, one will be reborn in the Land of Immovability. If one carefully guards the property of the Buddha and the Saṅgha, smears and sweeps the ground of the Saṅgha and the Buddha, or makes an image or a stūpa as small as a thumb, constantly giving rise to a joyful heart, one will likewise be reborn in the Land of Immovability. This refers to the Pure Land being ever-adorned and not shaken by the three calamities.