Reference for Pesachim 219:10
ואזדא רבא לטעמיה דרבא אפקינהו לרבנן בארבעה כוסות אע"ג דאיתזק רבא בר ליואי לא חש לה למילתא דאמר ההוא משום דאותבן בפירקא הוה
Abaye and Raba both maintained: We-yishmereka ['and keep thee'] combines [with others] for good, but does not combine for evil.<span class="x" onmousemove="('comment',' This is the third word of the verse, The Lord bless thee, and keep thee (ibid. 24) .');"><sup>13</sup></span> Now Raba is consistent with his view, for Raba allowed the Rabbis to depart [from his house] after four cups, [and] though Raba B'Liwai<span class="x" onmousemove="('comment',' Or, the Levite.');"><sup>14</sup></span> came to harm, he paid no heed to the matter, saying, 'That was [his punishment] because he raises difficulties at the public session.<span class="x" onmousemove="('comment',' He would raise difficulties in the course of my public lectures, thereby putting me to shame.');"><sup>15</sup></span>