Imam Rida (peace be upon him): Hasan ibn Ali ibn Fadhdhal said: I asked Imam Rida (peace be upon him) about the meaning of the saying of the Prophet (peace be upon him and his family) when he said: "I am the son of the two sacrificed ones." He said: "By the two sacrificed ones is meant, firstly, Ismail (peace be upon him) son of Ibrahim the Friend of Allah (peace be upon him), and secondly, Abdullah son of Abd al-Muttalib. As for Ismail (peace be upon him), he was the forbearing boy of whom Allah gave the glad tidings to Ibrahim (peace be upon him). When he reached the age of striving with him, he said: 'My son! I have seen in a dream that I am sacrificing you; what is your view?' He said: 'My father! Do whatever you have been commanded; you will find me, Allah willing, among the patient ones.' Ismail (peace be upon him) said: 'Father, carry out your mission,' and he did not say: 'My father, act upon what you have seen; Allah willing you will find me among the patient ones.' When Ibrahim (peace be upon him) resolved to slaughter his son, Allah ransomed him with a great sacrifice, which was a ram whose legs were those of a ram, and around whose mouth, around whose eyes, and around whose tail down to the underbelly was black, while the rest of its body was white. Before that, for forty years, it had grazed in the gardens of Paradise, and it had not come out of the womb of a female; rather Allah by His will had created it in order to make it a ransom for Ismail (peace be upon him). Everything that is slaughtered at Mina, until the Day of Resurrection, is all a ransom for Ismail (peace be upon him). This is one of the two sacrificed ones. As for the second sacrificed one, his account is this: Abd al-Muttalib took hold of the ring of the Ka'bah and asked Allah to grant him ten sons, and in order that this supplication be answered he made a vow to sacrifice one of the ten children. When the number of sons reached ten, he said: 'Allah has fulfilled His promise; I too must fulfil my vow.' Then he took his sons into the House of the Ka'bah and drew lots between them. The lot fell on Abdullah (peace be upon him), the father of the Messenger of Allah (peace be upon him and his family), who was the most beloved of his sons to him. A second time he shuffled the lots; again the lot fell on Abdullah (peace be upon him). For the third time he drew lots, and the lot fell on Abdullah (peace be upon him). Abd al-Muttalib took hold of Abdullah (peace be upon him), detained him, and resolved to sacrifice him. The Quraysh gathered and prevented him from sacrificing Abdullah (peace be upon him), and the women of the household of Abd al-Muttalib gathered together weeping and wailing. Atikah, the daughter of Abd al-Muttalib, said to him: 'Dear father, present an excuse between yourself and Allah for killing your son.' He said: 'My daughter, what excuse shall I present? Speak, for you are a blessed daughter!' She said: 'Draw lots between your son and the camels you have in the sanctuary, and give to your Lord until He is pleased.' Abd al-Muttalib sent someone and the camels were brought. He set aside ten camels and cast lots between those ten camels and Abdullah (peace be upon him). The lot fell on Abdullah (peace be upon him). Abd al-Muttalib kept adding ten camels at a time until it reached one hundred, and the lot fell on the camels. At this Abd al-Muttalib said takbir, and the Quraysh gave a takbir that shook the mountains of Makkah. Abd al-Muttalib said: 'I will not accept until the lot falls on the camels three times.' Then he drew lots three more times, and in each of the three the lot fell on the camels. On the third time, Zubayr and Abu Talib (peace be upon him) and his brothers pulled Abdullah (peace be upon him) out from under the feet of Abd al-Muttalib and took him away, while the skin of one side of Abdullah's face, which had been placed on the earth, had been torn away from its flesh. They lifted Abdullah up on their arms and kissed him and wiped the dust from his head and face. Abd al-Muttalib gave the order that the camels be slaughtered at the place of slaughter and that their meat be placed at the disposal of others without restriction; and their number was one hundred camels. Abd al-Muttalib laid the foundation of five practices which Allah the Mighty and Majestic put into effect in the religion of Islam: he forbade the wife of the father to the son; he set the blood-money for killing at one hundred camels; he used to circumambulate the House of the Ka'bah seven times; he found a treasure and gave one fifth of it in the way of Allah; and the well of Zamzam, which he dug for watering the pilgrims, he named Zamzam. Had it not been the case that Abd al-Muttalib had firmly resolved to sacrifice his son Abdullah (peace be upon him), just as Ibrahim (peace be upon him) had resolved to sacrifice his son Ismail (peace be upon him), the Messenger of Allah (peace be upon him and his family) would not have taken pride in his ascription to these two, in that both of them are the sacrificed ones, when he said: 'I am the son of the two sacrificed ones.' And the reason for which Allah the Mighty and Majestic lifted the sacrifice from Ismail (peace be upon him) is the same reason for which He lifted the sacrifice from Abdullah, namely that the Prophet (peace be upon him and his family) and the Imams of the religion (peace be upon them) were in the loins of these two, and through the blessing of the Prophet (peace be upon him and his family) and the Imams (peace be upon them) Allah lifted the sacrifice from these two. And for this reason it was not established that people should slaughter their children; otherwise it would have been obligatory on people, at every Eid al-Adha, to sacrifice their children. And whatever people offer as a sacrifice until the Day of Resurrection will be a ransom for Ismail (peace be upon him)."