Reference for Pesachim 186:4
האי חטאו ישא מאי עביד ליה קסבר מגדף לאו היינו מברך את השם וגמר האי חטאו דהתם מהאי חטאו דהכא מה הכא כרת אף התם כרת
How does he employ this [phrase] 'that man shall bear his sin'?<span class="x" onmousemove="('comment',' According to Rabbi it is necessary, as it refers to the punishment for the neglect of the second. But since R. Nathan relates it to the first, it is superfluous, having been already stated.');"><sup>5</sup></span> - He holds that megaddef is not one who curses the [Divine] Name,<span class="x" onmousemove="('comment',' But one who takes part in an idolatrous service, e.g., by singing hymns in a heathen Temple, v. Ker. 7b. Consequently, Nun,. XV, 30 cannot be identified with Lev. XXIV, 15 (v. notes supra) , and so there is nothing to indicate the meaning of 'shall bear his sin' in the latter verse, which refers to blasphemy.');"><sup>6</sup></span>