לא תבערו אש בכל משבתיכם ביום השבת (ויקהל לה:ג)

Maran Reb Yissocher Dov of Belz zt’’l had the custom of visiting every woman from the Belz community who had recently given birth to wish  Mazel Tov. These visits typically took place on Shabbos afternoons, often months after the birth.

During one of his visits, Reb Yissocher Dov, brought along his son, Maran Reb Aharon of Belz zt’l. On the way, they spotted a Jewish doctor who served the Belz community who had stravyed far from observance. As the doctor approached them, he quickly discarded a burning cigarette from his hand.

Observing this, Maran Reb Yissocher remarked to his son, “Nu, are you going to prove to me that he had forgotten today is Shabbos?”

Maran Reb Aharon responded, “It appears that he indeed forgot it was Shabbos, hence why he was smoking. The moment he noticed us dressed in our Shabbos attire, he likely recollected that it was Shabbos and instinctively discarded the cigarette.”