This view is promoted in some sutras like the Pañcavimsatisahasrika-prajñaparamita-sutra. The idea is also found in the Laṅkāvatāra Sūtra, which mentions that bodhisattvas take the following vow: "I shall not enter into final nirvana before all beings have been liberated."
This view is supported by certain sutras and teachings, including the Pañcavimsatisahasrika-prajñaparamita-sutra and the Laṅkāvatāra Sūtra. The concept emphasizes that bodhisattvas will not attain nirvana until all beings are liberated.