Halacha:

Responsa,  Tefillah 

History:

16th - 18th Centuries CE 

Machshava:

Kabbalah 

Collections: R' Fischer Responsa Class

References: Nodah B'Yehudah: YD 1:93  

Description

The Noda BiYehuda was asked his opinion on the addition of mystical prayers, such as the Kavvanot Ha-Ari, to the standard service. His answer sheds light on his thoughts about kabbalistic practices in general and their role within halakha