Does Hearing a Beracha for Tefillin from Someone Else Count—And What If the Speaker or Listener Makes a Mistake? One of the foundational principles in Halacha is Shome'a Ke'Oneh —"the listener is as if he himself recited." This principle allows a person to fulfill a Beracha obligation by hearing someone else say the Beracha and answering "Amen," provided certain conditions are met. This rule applies not only to communal rituals like Kiddush, Havdala, or Megillah, but also to personal Misvot such as Tefillin . For example, if someone says the Beracha over Tefillin aloud with the intent to fulfill the obligation for another, the listener may rely on that Beracha and is exempt from saying his own— if all the proper conditions are met . The Halachic Conditions for Shome'a Ke'Oneh to Work According to Shulhan Aruch (O.H. 213:2), four conditions must be present for Shome'a Ke'Oneh to apply: The person saying the Beracha must have intent to fulfill the obligation for the listener. The listener must also have intent to be yotze through the speaker's Beracha. The listener must hear the entire Beracha clearly —from "Baruch Ata" through the conclusion. The listener should answer "Amen" immediately upon hearing the end of the Beracha. If all of these are fulfilled, the listener is considered to have personally recited the Beracha and can then proceed to perform the Misva—in this case, placing Tefillin— without saying his own Beracha . Applying This to Tefillin In many Sephardic yeshivot and minyanim, it is common for a father to recite the Beracha aloud while helping his son put on Tefillin for the first time. Or a Hazan may say the Beracha for several men in the room. So long as the speaker and listener have the mutual kavana (intent), and the listener hears the Beracha clearly and answers "Amen," this is fully valid. The Ben Ish Hai and Kaf Ha'Haim both encourage the use of this mechanism, especially for beginners or people who may struggle with pronunciation or correct Beracha wording. What If the Speaker Interrupts? Now we come to a practical concern. What happens if the person who said the Beracha speaks between the Beracha and putting on the Tefillin ? For example, if Reuven says "Baruch Ata… Lehani'ah Tefillin," and then says something unrelated before placing the Tefillin (e.g., "Where's my bag?" or "Let me adjust my jacket"), he has made a Hefsek (interruption), and according to Maran (O.H. 25:9), he is required to recite a new Beracha . But what about Shimon , who was listening and answered "Amen" with the intent to be yotze? This is debated among the Poskim: According to some, the listener's Beracha is still valid , because at the moment he heard it, the Beracha was said properly and with kavana. This is the ruling of Hacham Ovadia Yosef ( Yabia Omer and Halichot Olam ), who holds that the speaker's later mistake does not invalidate the listener's fulfillment . Others argue more strictly, saying the speaker's interruption disqualifies the entire process—including for the listener. However, this view is not followed in practice by the majority of Sephardic authorities. What If the Listener Interrupts? If the listener himself speaks after answering "Amen" and before placing his own Tefillin , the ruling is more severe. In this case, the listener has created a Hefsek between the Beracha and the act , and must now recite a new Beracha , specifically "Al Misvat Tefillin" before placing the Shel Rosh. This is a straightforward ruling in Shulhan Aruch and the Ben Ish Hai . The interruption breaks the connection between the Beracha and the Misva, even though the listener did not speak during the actual Beracha. However, if the speech was related to the Misva —such as "Pass me the Shel Rosh" or "Can you adjust the knot?"—this is not ideal but is not considered a full Hefsek , and a new Beracha is not required . What If There Was No Kavana? Shome'a Ke'Oneh only works when both parties have intent : If the speaker was not aware that someone was listening—or had no intent to fulfill their obligation—then the listener is not yotze . Similarly, if the listener was distracted, unsure, or did not intend to be yotze, the Beracha does not apply to him. The Hida and Kaf Ha'Haim emphasize this in many places, warning against relying on a public Beracha unless you're sure both parties are aware and participating with clear intent. In cases of doubt (e.g., someone is unsure if the speaker had him in mind), the principle of Safek Berachot Le'hakel applies: Do not repeat the Beracha unless you are certain that it is required. Summary: A person may fulfill the Beracha for Tefillin by listening to someone else , if both have intent and the listener answers "Amen." If the speaker interrupts after the Beracha, most Sephardic Poskim say the listener is still covered . If the listener interrupts before putting on the Tefillin, he must recite a new Beracha . Speech related to the Misva is discouraged but not a disqualifying Hefsek. Without mutual intent , the Beracha does not count . When in doubt, follow Safek Berachot Le'hakel —do not repeat the Beracha unless clearly necessary.