http://dictionary.sutta.org/browse/s/sakkhiSuppose I was to say the same thing to a mendicant who is freed by wisdom, idhassa bhikkhu paññāvimutto …
or a personal witness, kāyasakkhi …
or attained to view, diṭṭhippatto …
or freed by faith, saddhāvimutto …
or a follower of the teachings, dhammānusārī …
or a follower by faith: saddhānusārī, tamahaṃ evaṃ vadeyyaṃ:
i think the translation of "belief in a self" is off the mark,sakkhiPTS Pali-English dictionary The Pali Text Society's Pali-English dictionary
Sakkhi,1 [sa3+akkhin; cp.Sk.sākṣin] an eyewitness D.II,237 (Nom.sg.sakkhī=with his own eyes,as an eyewitness); Sn.479,921,934 (sakkhi dhammaṁ adassi,where the corresp.Sk.form would be sākṣād); J.I,74.-- kāya-sakkhī a bodily witness,i.e.one who has bodily experienced the 8 vimokkhas A.IV,451; Vism.93,387,659.-- sakkhiṁ karoti [Sk.sākṣī karoti] (1) to see with one’s own eyes S.II,255; (2) to call upon as a witness (with Gen.of person) J.VI,280 (rājāno); DhA.II,69 (Moggallānassa sakkhiṁ katvā); PvA.217 (but at 241 as “friendship”).Note.The P.form is rather to be taken as an adv.(“as present”) than adj.:sakkhiṁ & sakkhi,with reduced sakkhi° (cp.sakid & sakiṁ).See also sacchi°.
--diṭṭha seen face to face M.I,369; D.I,238; J.VI,233.--puṭṭha asked as a witness Sn.84,122; Pug.29.--bhabbatā the state of becoming an eyewitness,of experiencing M.I,494; DhsA.141.--sāvaka a contemporaneous or personal disciple D.II,153.(Page 661)
https://en.wikipedia.org/wiki/Fetter_(Buddhism)
belief in a self (Pali: sakkāya-diṭṭhi)[7]