Gifting during one's lifetime

Q: I have three brothers and two sisters. My dad built some houses. Whilst alive my dad said that these houses are for my younger two children. He had an intention to build houses for my older brothers, but before he could, he died.

My question is, will the first set of houses go to the younger children or will they be shared between all the brothers and sisters?

Ruling regarding a khunsa (hermaphrodite)

Q: There is a person who is a khunsa (hermaphrodite), but classified as a man now due to beard, urination etc. But he originally had two private parts. He does not have any attraction to any gender.

1. Is this person considered a khunsa or a man?

2. Is his imaamat of men valid? Or makrooh or what

3. Can a mukhannas be an imam?

From what I understand that it is a man but with womenly movements and speech

Musjid Open Days

Q: Is it permissible to have a musjid open day where non-Muslims are invited to the musjid with the intention of dawah and presenting Islam to them? In today’s times, we find that this practice is becoming common in various places. Is this practice in conformance with the sunnah?