Sayyiduna Qabisah bin Mukhariq (may Allah be pleased with him) said: I came to the Prophet (peace and blessings be upon him) to ask (for help) regarding a debt I had taken on (to settle a dispute). He (peace and blessings be upon him) said: "Asking is forbidden except in three cases: a man who has taken on such a debt; asking is permissible for him until he pays it off, and then he should refrain (from asking). Second, a man struck by a sudden calamity that destroys his wealth; asking is permissible for him until his livelihood becomes stable, or he said: until his livelihood becomes adequate, and then he should refrain from asking. And third, a man who falls into need or reaches the point of starvation, and three men of his people testify about him; asking is permissible for him. Asking other than this is unlawful and forbidden."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحوالة / 11400