Bulugh al-Maram #1003

Narrated Qabisa bin Mukhariq al-Hilali (RA): Allah's Messenger (ﷺ) said: "Begging is not lawful except to one of three (people): a man who has become a guarantor for a payment, for whom begging is lawful till he gets it, after which he must stop begging; a man whose wealth has been destroyed by a calamity which has befallen him, for whom begging is lawful till he gets what will support life; and a man who has been struck by poverty, the genuineness of which is confirmed by three intelligent members of his people, so it is lawful for him to beg." .