Siddur Yitzchak Yair SC Pocket Ashkenaz

“This sefer is one-of-a-kind among sefarim on hilchos lashon hara. Its great benefit and assistance [will be] clear to those who wish to be exacting in their speech, as well as those who wish to study the halachos thoroughly.” Hagaon Harav Shmuel Kamenetzky shlit”a