I stood as surety for a debt and came to Messenger of Allah (ﷺ) to seek his help in discharging it. Messenger of Allah (ﷺ) said, "Wait till we receive charity and I shall give you out of it." He (ﷺ) added, "O Qabisah, begging is not lawful except for three people. One who has incurred debt (for assuming guarantee), for him begging is permissible till the guarantee is discharged and he should then refrain; a person whose property has been destroyed by a calamity is allowed to beg till he attains self-sufficiency; a person who meets with dire necessity (due to hunger) provided that three men of understanding from his people affirm the genuineness (of his poverty), for him begging is lawful till he attains means of his subsistence. Other than these, O Qabisah, anything received through begging is unlawful, its recipient devours it unlawfully."

[Muslim].