What is the ruling on collective talbiyah? Then he spoke about a woman raising her voice in the talbiyah.

The Shaykh : Then, there are two observations here. The first is what was mentioned previously.The questioner : The clarification is that in the talbiyah, it is not required that the group recite it with a single voice; in fact, it is not permissible for it to be that way. I said it is not required, then I paused and said, "Rather, it should not be that way." Each person should recite the talbiyah according to his capacity and according to the length or shortness of his breath. Among the misfortunes and errors of collective dhikr, as some do after the Fajr and Maghrib prayers, is a very bad phenomenon: one person has a short breath and cuts off the sentence, then sees that the group has moved ahead and tries to catch up without realizing that cutting off and pausing may be forbidden according to the rules of recitation and tajwid. This was observed by us in some mosques in Syria. Among their misfortunes and bad practices is that they link the first tahlil to the next without taking a breath or allowing each of these people reciting the tahlil to take a breath at the end of the tahlil. "He is All-Powerful over all things" — the phrase "There is no god but Allah alone" ends, but they do not let it end; they rush to "He is All-Powerful over all things" before finishing "There is no god but Allah." One person's breath cuts off at "There is no god," and this is what we used to hear. It is not obligatory to stop at "There is no god." "There is no god" is kufr (disbelief) and shirk (associating partners with Allah); "alone" does not cause harm. The important thing is that they link their voices together, and they fall into verbal violations that constitute verbal shirk. Of course, a person is not judged as a mushrik (one who associates partners with Allah) or a kafir (disbeliever) because, as we said, this is verbal shirk, not shirk of the heart. But what led them to this verbal shirk? It is their innovation in religion. Therefore, all dhikr, including the talbiyah in Hajj and 'Umrah, should be recited by each person according to his energy and breath, without linking his voice and letters to the letters of his companion next to him. It is observed that many times the voices meet, and there is no harm in that, obviously. Just as it is not prescribed for the one reciting the talbiyah to intentionally make his voice match the voice of the one reciting with him, it is not recommended for him to intentionally make it differ from it, because both actions are an excessive effort (takalluf) that is prohibited by the Shari'ah. This is the first observation.
The second observation, which may be strange to the general public, is that women participate with men in raising their voices in the talbiyah. It will be said here what is usually said, for example, that a woman's voice is 'awrah (a part of the body that must be covered). Although we do not find in the Book or the Sunnah anything indicating that a woman's voice is 'awrah, we see that a woman must not raise her voice when addressing men, let alone in reciting the Qur'an or in the dhikr of the prescribed adhkar, except in this rite of the rites of Hajj, which is the talbiyah. Perhaps the wisdom behind this is that this Islamic manifestation, which has no parallel in the Shari'ah itself, let alone in other laws, is such that a woman's voice is lost here, unlike if a woman were in a quiet environment and raised her voice, even in reciting the words of Allah, the Book of Allah the Exalted and Majestic, as is sometimes broadcast about Umm Kulthum, this singer, where they broadcast her recitation of the Qur'an. This is, of course, not permissible in Islam. But in the talbiyah with the voices of the crowd, the women's voices are lost in the echo of the men's voices, and it is not apparent that it is Zaynab or Aisha or Umm Kulthum who are raising this voice; the matter is lost. Perhaps this is part of the legal wisdom for women also raising their voices in this talbiyah in Hajj or 'Umrah. These pilgrims continue in the talbiyah, observing the etiquette mentioned previously, with tasbih and takbir in the valleys and mountains...