The Prophet (may Allah's peace and blessings be upon him) tells that Allah, the Almighty, answers the invocations of His slave, so long as he does not supplicate for an act of disobedience or for severing kinship ties, and so long as he is not hasty. The Prophet (may Allah's peace and blessings be upon him) was asked about the nature of haste that prevents the fulfillment of supplication. He explained that one complains that he supplicates repeatedly but gets no answer. Upon that, he thinks that his invocation is not going to be answered out of haste, so he stops asking Allah, the Almighty.