Sahih Muslim Book 33, Hadith Number 6438.

Chapter : The span of life and livelihood does not increase or decrease beyond that what is laid down.

Abdullah reported that Umm Habiba, the wife of Allah’s Apostle (may peace be upon him), said: O Allah, enable me to derive benefit from my husband, the Messenger of Allah (may peace be upon him), and from my father Abu Sufyan and from my brother Mu’awiya. Allah’s Apostle (may peace be upon him) said: You have asked from Allah about durations of life already set, and the length of days already allotted and the sustenance’s the share of which has been fixed. Allah would not do anything earlier before its due time, or He would not delay anything beyond its due time. And if you were to ask Allah to provide you refuge from the torment of the Hell Fire, or from the torment of the grave, it would have good in store for you and better for you also. He (the narrator) further said: Mention was made before him about monkeys, and Mis’ar (one of the narrators) said: I think that (the narrator) also (made a mention) of the swine, which had suffered metamorphosis. Thereupon he (the Holy Prophet) said: Verily, Allah did not cause the race of those which suffered metamorphosis to grow or they were not survived by young ones. Monkeys and swine had been in existence even before (the metamorphosis of the human beings).