It is narrated from Hazrat Anas (may Allah be pleased with him) that Rubai‘, who was the mother of Haritha (may Allah be pleased with him), broke the tooth of a girl. Then those people came to the Prophet (peace and blessings be upon him) and began to demand retribution (qisas). The Prophet (peace and blessings be upon him) ordered retribution. So Rubai's mother said, "O Messenger of Allah (peace and blessings be upon him)! Will so-and-so's (my daughter's) tooth be broken?" By the One Who has sent you with the truth, so-and-so woman's tooth will not be broken. Meanwhile, those people became pleased and forgave her and gave up their demand for retribution. Upon this, the Prophet (peace and blessings be upon him) said: "There are some servants of Allah who, if they swear an oath by Allah regarding something, Allah surely fulfills their oath."