In 1918, he married the daughter of Yochanon Rudensky of Volozhin, the brother-in-law of Simcha Zelig Riger of Brisk, the dayan for the Brisker Rav.
After his marriage, Lebowitz asked Heiman to be a lecturer at the yeshiva in Kaminetz, which by this time had been wandering from Slobodka to Krementchug.
After the war, Heiman began to deliver his Talmudic lectures in Ohel Torah of Baranowitz, under the leadership of Elchanan Wasserman.
In 1935, Heiman was invited to New York by Shraga Feivel Mendlowitz, in order for him to come and lead Mesivta Torah Vodaath.
A two-volume compendium of Heiman's Talmudic novellae, Chiddushei Rabbi Shlomo, was printed after his death (in 1966), based on his own writings, and incorporating notes of his students.