<p class="MsoNormal" style="text-align: left; line-height: normal; margin: 0cm 0cm 10pt;" align="left"><span style="color: black; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-fareast-language: EN-GB;"><span style="font-size: small;"><span style="font-family: Times New Roman;">After a person had accepted Shabbos early, he realised that he had not put on tefillin that day. He asked one of today&rsquo;s Gedolim what do do and he told him to do hataras nedarim to cancel his early acceptance of Shabbos. (see Piskei Teshuvos, volume 3, chapter 261, paragraph 9, for a discussion on this question)</span></span></span></p>