Holding Tzitzit during Shema - from HalachaforToday.com

These Q&A are taken from the Q & A  pages on the Halacha For Today website.   Although the answers  are taken directly from the Sifrei HaPoskim, , they are still for study purposes only, NOT for Psak Halacha.  Questions can be emailed to HalachaForToday@Gmail.com

Question:   I was just wondering, in your halachos you mentioned holding the tzitzis during Shma between the 4th and fifth finger - what is the significance of that (as opposed to holding them any other way)?    Answer:      The Sefer Taamei Haminhagim  quotes the Eishel Avraham in the name of the Yam Shel Shlomo  in Yevamos to hold the Tzitzis  between these fingers. He doesn't explain the reason, he just says that there is a very deep "Sod" to doing this. They also quote a Chida  in Birchei Yosef who says this is based on Kaballah.