These days are the best days of the year as we were told by our Prophet salla Allahu alaihi wa sallam. One can do all good deeds such as fasting, praying and charity. The reward mentioned in the question is not authentic.

Read more

Al takbee al moqay’yad is the one that is performed after prayers, starting from Fajr of 9th until the sunset of the 13th.

Read more

Salatul Awabeen is also known as Duha and it is 2 rak’ah. You can pray more if you wish.

Read more

I would recommend that you do both.

Read more

If your mother in law is not living in your hometown, you can shorten the whole period. But if she lives in your same city, you have to pray full prayers.

Read more

This is not true unless he deliberately skips Asr prayer until Maghrib is due every single day. Whoever does this would lose all his good deeds.

Read more