Its virtues and those upon whom Hajj (Pilgrimage) is obligatory Bulugh al-Maram 712
Translation
Anas (RAA) narrated that the Messenger of Allah (ﷺ) was asked, ‘What is as-Sabil?’ The Messenger of Allah (ﷺ) replied, "Provision of food and means to make the journey." Related by Ad-Daraqutni and rendered authentic by Al-Hakim.