"Whoever believes in Allah and the Last Day should be hospitable with his or her guests."
Our great Prophet [s] teaches us to be generous and how to entertain guests. He wants a Muslim to show gratitude and be kind and happy when receiving guests. One should respect and welcome his guests, in particular when they are strangers, or have no family or friends in that country.
It may even happen that a guest comes while relatives or friends are being entertained, or other travellers are staying and there is lack of space; or you are unprepared and have few provisions or are even short of money. In any eventuality, guests who come to your home should be made welcome, shown respect and be provided with whatever food and drink are available. One should sit with them in order to make them feel comfortable and happy, and take care to pay great attention to them.
Surely, our glorious Prophet [s] guides us towards respecting guests and being generous towards them. In this respect, he says: "Indeed whoever believes that Allah is All-Generous, Who provides for His creation and rewards those who are hospitable towards their guests, should look after his guest."
Surely, Allah will increase our provision if we welcome our guests and give them food and drink, and will reward us on the Resurrection Day.
Allah is All-Generous, who loves the generous ones and dislikes those who are mean.
Shaikh Abbas Qummi, Safinat al-Bihar, Bab Dhaif, Sunan ibn Maja, vol. 2, Haq al Jiwar (The rights of neighbours), Ikram al-Dhaif (Respecting the Guest).