There is no specific number of Rak`ahs for Tarawih prayer, such that it is not allowed to do more or less than that. Whoever prays Tarawih with 30 Rak`ahs, or more or less than that, there is no blame on him, and he is not innovating by doing that.

The regular sunnah prayers that are offered before an obligatory prayer must be done after the time for the obligatory prayer begins.

It is prescribed for a menstruating woman to offer the supplication of Istikharah without praying (Salah).

The words of the Prophet “and two Rak`ahs offered in the forenoon (Duha) will suffice for that (i.e., charity)” are indicative of the great virtue of Duha and how important it is. The narration also indicates that it may be offered with two Rak`ahs. Also, the Prophet advised Abu Hurayrah never to give it up.

1- The correct view is that the regular Sunnah prayers are twelve Rak’ahs: 2 Rak’ahs before Fajr; 4 Rak’ahs before Dhuhr, with 2 Salams, and 2 Rak’ahs afterwards; 2 Rak’ahs after Maghrib; and 2 Rak’ahs after `Isha’. 2- Sunnah prayers should be offered individually except in cases in which the Sunnah is to offer them in congregation, such as Tarawih prayers.

If a woman prays Dhuhr in her house on Friday, then she should pray the Sunnah prayers that come before and after Dhuhr, as she does daily.

If offering Duha prayer will not affect the work for which you are responsible, then there is nothing wrong with offering the prayer.