Islam is the religion that favors always weak people and empowers them. The history tells us that from the beginning of history, weak and poor people are being suppressed repeatedly in every society. But when Islam came, it defends weak and poor side of society.
In the beginning, when Islam was in its starting point, the Caesar of Rome asked Hazrat Sufyan – not embraced Islam then – about who were accepting Islam, poor people or rich, he answered that only poor are embracing Islam. Then Caesar of Rome replied that like this was the condition of the true religions of past times.
Hazrat Prophet Muhammad (صلى الله عليه وسلم) said that I and the orphans are very close to each other in the Heaven like two fingers.
Apart from this Hadith, there are a lot of Hadiths and Sayings of Prophet Muhammad (صلى الله عليه وسلم)، regarding the matter.