Assertion: formless meditation | /r/HasProperty | arūpajhānas
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Source sentences:
text: The Pāli canon describes eight progressive states of jhāna: four meditations of form (rūpa jhāna), and four formless meditations (arūpajhānas), though the early texts do not use the term dhyana for the four formless meditations, calling them instead āyatana (dimension, sphere, base).