Does it mean
orphan girls(about marrying them) or it mean
orphan children(about adopting them)?
orphan girls in Sahih International translation:
And if you fear that you will not deal justly with the orphan girls, then marry those that please you of [other] women, two or three or four. But if you fear that you will not be just, then [marry only] one or those your right hand possesses. That is more suitable that you may not incline [to injustice].(quran 4:3 - Sahih International)
adopted orphan children in Yusuf Ali translation:
If ye fear that ye shall not be able to deal justly with the orphans, Marry women of your choice, Two or three or four; but if ye fear that ye shall not be able to deal justly (with them), then only one, or (a captive) that your right hands possess, that will be more suitable, to prevent you from doing injustice.(Yusuf Ali)
So is it possible to conclude from the above verse that:
If ye shall be able to deal justly with the **orphans**
then the best thing is adopting orphan children than marrying a girl.