Matsyapurana 105.8

105.8

deśastho yadi vāraṇye videśastho 'thavā gṛhe
prayāgaṃ smaramāṇo 'pi yastu prāṇānparityajet
brahmalokamavāpnoti vadanti ṛṣipuṃgavāḥ //

One who thinks of Prayâga in his own country, in the forests, in some foreign land, or even in his own house, on the point of one's death, goes to the world of Brahmâ. This is the saying of the good sages.—8.