The Heart Sutra is one of the best known, most chanted, of all sutras. It exists in a longer and a shorter form - the calligraphy here is of the shorter version. There are a number of standard commentaries on this sutra, which look at it from a variety of traditional view points.

This version of the Heart Sutra is based on Edward Conze's Sanskrit edition as it appears in his book Buddhist Wisdom Books. Another version of the Heart Sutra written in Siddham can be seen here. This one adopts the chinese practice of lining all the characters up on the page in a grid. I have chosen to show line breaks because I find it easier to follow.

prajñāpāramita-hṛdayam sūtra

oṃ namo bhagavatyai ārya prajñāpāramitāyai!

ārya-avalokiteśvaro bodhisattvo gambhīrāṃ

prajñāpāramitā caryāṃ caramāṇo vyavalokayati sma:

panca-skandhās tāṃś ca svābhava śūnyān paśyati sma.

iha śāriputra rūpaṃ śūnyatā śūnyataiva rūpaṃ,

rūpān na pṛthak śūnyatā śunyatāyā na pṛthag rūpaṃ,

yad rūpaṃ sā śūnyatā ya śūnyatā tad rūpaṃ;

evam eva vedanā saṃjñā saṃskāra vijñānaṃ.

iha śāriputra sarva-dharmāḥ śūnyatā-lakṣaṇā,

anutpannā aniruddhā, amalā avimalā, anūnā aparipūrṇāḥ.

tasmāc chāriputra śūnyatayāṃ

na rūpaṃ na vedanā na saṃjñā na saṃskārāḥ na vijñānam.

na cakṣuḥ-śrotra-ghrāna-jihvā-kāya-manāṃsi.

na rūpa-śabda-gandha-rasa-spraṣṭavaya-dharmāh. Na cakṣūr-dhātur

yāvan na manovijñāna-dhātuḥ.

na-avidyā na-avidyā-kṣayo

yāvan na jarā-maraṇam na jarā-maraṇa-kṣayo.

na duhkha-samudaya-nirodha-margā. Na jñānam, na prāptir na-aprāptiḥ.

tasmāc chāriputra aprāptitvād

bodhisattvasya prajñāpāramitām āśritya

viharatyacittāvaraṇaḥ. cittāvaraṇa-nāstitvād

atrastro viparyāsa-atikrānto niṣṭhā-nirvāṇa-prāptaḥ.

tryadhva-vyavasthitāḥ sarva-buddhāḥ prajñāpāramitām

āśrityā-anuttarāṃ samyaksambodhim abhisambuddhāḥ.

tasmāj jñātavyam:

prajñāpāramitā mahā-mantro mahā-vidyā mantro

"nuttara-mantro" samasama-mantraḥ,

sarva duḥkha praśamanaḥ, satyam amithyatāt.

prajñāpāramitāyām ukto mantraḥ. tadyathā:

gate gate pāragate pārasaṃgate bodhi svāhā

iti prajñāpāramitā-hṛdayam samāptam.