Narrated Abu Musa رضي الله عنه (May Allah be pleased with him): The Prophet صلى الله عليه وسلم (Peace be upon him) was sitting and a man came and begged or asked for something. The Prophet faced us and said, "Help and recommend him and you will receive the reward for it.
[Sahi Bukhari, Hadith no. 6027]
Narrated Ali رضي الله عنه (May Allah be pleased with him): The Prophet صلى الله عليه وسلم (Peace be upon him) said: A beggar has the right though he may be riding a horse.
[Sunan Abu Dawood, Hadith no. 1665, Authentic]
Narrated Anas ibn Malik رضي الله عنه (May Allah be pleased with him): A man of the Ansar came to the Prophet صلى الله عليه وسلم (Peace be upon him) and begged from him. He (the Prophet) asked: Have you nothing in your house? He replied: Yes, a piece of cloth, a part of which we wear and a part of which we spread (on the ground), and a wooden bowl from which we drink water. He said: Bring them to me. He then brought these articles to him and he (the Prophet) took them in his hands and asked: Who will buy these? A man said: I shall buy them for one dirham. He said twice or thrice: Who will offer more than one dirham? A man said: I shall buy them for two dirhams. He gave these to him and took the two dirhams and, giving them to the Ansari, he said: Buy food with one of them and hand it to your family, and buy an axe and bring it to me. He then brought it to him. The Apostle of Allah (peace be upon him) fixed a handle on it with his own hands and said: Go, gather firewood and sell it, and do not let me see you for a fortnight. The man went away and gathered firewood and sold it. When he had earned ten dirhams, he came to him and bought a garment with some of them and food with the others. The Apostle of Allah (peace be upon him) then said: This is better for you than that begging should come as a spot on your face on the Day of Judgment. Begging is right only for three people: one who is in grinding poverty, one who is seriously in debt, or one who is responsible for compensation and finds it difficult to pay.
[Sunan Abu Dawood, Hadith no. 1641, Authentic]