I have recently had a bloody nose during shacharis, and a drop of blood got on the inner part of my tefillin retzuos hanging down from my Shel Rosh. Do I now need to replace my retzuos because the (obviously non-kosher) blood got on them?

Answer:

You don’t have to worry about this, and certainly not to replace the retzu’os because of this.

Best wishes.

Sources:

There is no obligation to paint the reverse side of the tefillin straps black.

There is an opinion that the edges of the retzuos should be painted black (Keses Ha-Sofer 23:2). However, this opinion is not accepted in halachic practice (see for example, Mishnah Berurah 33:24 quoting Pri Megadim in Eshel Avraham 33:7).

Therefore, the fact that a drop of blood fell on the reverse side of the straps will not constitute a problem.

Best wishes.

Tags: black color retzu'os straps

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