After we offer Maghrib (Sunset) Prayer, someone may give a religious sermon which may take a long time. Should we leave the Sunnah (supererogatory) Salah to listen to the sermon or what should we do?
Also if the person misses the two Rak`ahs of Nafilah (supererogatory) Salah before Fajr (Dawn) Prayer, should he join the congregational Salah to offer them or should he offer them individually then join the obligatory Salah?
(Part No. 7; Page No. 234) If a religious sermon is being given in the Masjid (mosque), a Muslim should listen to it and then he may offer the Sunnah (supererogatory) Salah whether it is the Sunnah Salah of Zhuhr (Noon), Maghrib (Sunset) or `Isha' (Night) Prayer.
If a person goes to the Masjid before the Iqamah (call to start the Prayer) of Fajr Prayer, he should offer the Sunnah Salah before Fajr Prayer. This is sufficient for him instead of Tahiyyat-ul-Masjid (two-unit Prayer to salute the mosque). If he goes to the Masjid after the Iqamah of Fajr Prayer, he should join the congregational Salah. After he finishes congregational Salah, he may offer the two Rak`ahs of Sunnah Salah but it would be better for him to delay them until sunrise.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.