Reference for Pesachim 233:4
איבעיא להו הללויה לרב מאי ת"ש דאמר רב חזינא תילי דבי חביבא דכתיב בהו הללו בחד גיסא ויה בחד גיסא
The scholars asked: What about Jedidjah in Rab's view? - Come and hear: Jedidjah is divisible into two, therefore Jedid is non-sacred while Jah [the Lord] is sacred.<span class="x" onmousemove="('comment',' This would affect e.g., the manner of its writing. If 'Jedid' is written incorrectly, it can be erased and rewritten. But Jah, being sacred (i.e., God's name) , must not be erased and would have to be cut out entirely, together with its parchment.');"><sup>7</sup></span> The scholars asked: What about Hallelujah in Rab's view? Come and hear, for Rab said: I saw [a copy of] the Psalms in my friend's college,<span class="x" onmousemove="('comment',' I.e., at the college of R. Hiyya.');"><sup>8</sup></span>