Editing Yehoshua Lein (section)

== Rudnia ==
Due to persecution by the secret police, he moved to the town of Rudnia near Lubavitch where he served as rav and shochet u'bodek, while simultaneously teaching nigleh and chassidus to several tmimim who had fled from the KGB and found refuge in his home.

Among the students were the tmimim Velvel Auerbach and Sholom Ber Notik. Rav Lein would learn with them throughout the day and his son Sholom Ber Lein would join the two. It is said that Sholom Ber Notik was his special student and received from him abundant Torah, wisdom and chassidic stories. R' Sholom Ber Notik compiled a collection of stories about and from Rav Yehoshua Lein, and these stories were published in the sefer Avnei Chen in a special chapter.

In 1938, he was arrested by the secret police and released after a short time by a relative who had left the path and was among the police officers, who set a condition that he would release him only if he stopped engaging in Jewish activities, shechting chickens for the townspeople and so forth. Nevertheless, after his release he continued with mesiras nefesh to engage in shechita and teaching the tmimim and sharing chassidic ma'amarim in the shul.