Emptiness Mantra
oṃ svabhāva śuddhāḥ sarvadharmāḥ svabhāva śuddho ‘haṃ
[Sanskrit transliteration provided by Stephen Goodman]
Note on Pronunciation
The apostrophe in the syllable ‘haṃ is a transliteration of the sanskrit avagraha (transliterated as the nya log in Tibetan). It is not pronounced, but is used to indicate the elision (i.e. omission) of the "ha" sound, owing to "the rules of sandhi" - which is the combining of sounds in an harmonious fashion. Thus, the words "śuddho ‘haṃ" would actually be pronounced "śuddhoṃ", however Tibetan pronunciation can vary according to their knowledge of Sanskrit.