佛說觀佛三昧海經 4.35

4.35

The Buddha told Ānanda: “After the Buddha’s parinirvāṇa, the Buddha’s disciples who hear this Dharma, reflect upon this Dharma, and contemplate this Dharma—such persons will constantly see Śākyamuni in their dreams emitting light from his navel to illuminate them, the marks of this light being as described above. The places where such persons are born will not involve being dwelling in a womb; they will constantly be born in pure lands, and if born in the heavens, they will spontaneously be born by apparitional birth.”