I am aware that Islam encourages looking after the orphans. It also prohibits giving your own lineage in place of their original lineage (through a change in surname). But what is the ruling related to giving them inheritance after our death?

Is the marriage of a child of blood with his adopted sister and / or the marriage between a daughter of blood and his adopted brother lawful? And in the case of a man adopted from a family and a woman adopted from another family by the same parents, would the marriage between these two siblings be lawful?

Can a person male who had muttah with a woman after ending muttah marry make permenant nikkah with her adoptive daughter (not real daughter)?

I'm a young muslim woman who wants to have children in the futur when i'll get married, but i always wanted to adopt and not give birth to my own children. I was wondering if it was prohibited to do so, knowing that i'm healthy with no fertility issus? I prefer to avoid giving birth for several reasons, and i really want to help an orphan to get a better life, so i would like to know if it's permissible to only adopt and not have my own kids with the use of temporary birth control such as the pill, with the consent of my partner of course.

I’ve read on this sight that it is a requirement that all people are to have children to keep our communities flowing. But what if one is incapable of conceiving for whatever reasons aside from using birth control? Are they no longer useful? Are they worthless? In this religion it is viewed as crucial and top tier to have a family saying how extraordinaire it is to have them to the point where it’s as if not being able to have children makes them a weak person, whom have no purpose in life. Is that the case for those who do not want and/or cannot have children?

After knowing that , if a couple adopts a child, the child will still be non-mahram for the woman if it was a boy or vice-versa for her husband. Alhamdulillah these restrictions will not be applied, if the woman suckled the adopted child before (s)he reaches the age of two. Is it allowed in Islam to suckle a child who can't give birth, with milk produced through medicinal means? I found that it was allowed in Islam to suckle using medicinal mens to make a child mahram. I have two questions regarding this: - How many times should a woman suckle her adopted child to become his mahram? Is doing it just once enough? Since taking medicines continuously may have a negative affect on the mother's health. - If the adopted child is female and if the woman suckled the child, then does that child become mahram to her husband?

Some people have told me adoption is not allowed in Islam, but i could not find any hadees or verses to be sure of this thing. Is it true?