Rav Avrohom Baruch Zachariash resumes his wildly popular Pirkei Avos shiur, this time on Thursday night via ZOOM.

Chapter 3:5

רַבִּי חֲנִינָא בֶן חֲכִינַאי אוֹמֵר, הַנֵּעוֹר בַּלַּיְלָה וְהַמְהַלֵּךְ בַּדֶּרֶךְ יְחִידִי וְהַמְפַנֶּה לִבּוֹ לְבַטָּלָה, הֲרֵי זֶה מִתְחַיֵּב בְּנַפְשׁוֹ:

Rabbi Hananiah ben Hakinai said: one who wakes up at night, or walks on the way alone and turns his heart to idle matters, behold, this man is mortally guilty.