Sahih Muslim Book 9, Hadith Number 3516.

Chapter: There is no maintenance allowance for one who has been given irrevocable divorce.

Fatima bint Qais reported: I had been married to a person from Banu Makhzum and he divorced me with irrevocable divorce. I sent a message to his family asking for maintenance allowance, and the rest of the hadith has been transmitted with a slight change of words.