Shaikh Mohammed bin Yaqoob bin Ishaq Kulaini died in Baghdad in 329 A.H. The year he died is called ‘tanasirul nujoom’ or the year of the breaking of the stars, because during this year it was observed that a lot of stars appeared to break and fall. Also, it was a year that saw the death of prominent Ulema – Kulayni, followed by the death of the father of Sheikh Sadooq, Ali bin Babwayh Qummi. The 12th Imam’s special naeb(representative), Ali bin mohammed, too, died in this year. This year also marked the beginning of ghaibat e kubra( major occultation) of the Imam. Hence this year is called the year of the breaking of the stars, as it appeared as if the stars of the sky were breaking and falling towards the earth, and stars of the sky of knowledge, too, broke and fell.
His age, when he died is calculated to be about 80 years. According to the Christian calendar it was the year 941 AD. His salatul mayyit (prayer over the dead body) was recited by Mohammed bin Ja’far Husseini abu Qaraat. He is buried in Baghdad ,in Bab e Koofa. This is the same district where he used to live. It is located in eastern Baghdad . He grave exists there even today.
Baghdad has always been a centre of the opponents of the Shia faith. After a long time had passed after Kulaini’s death, a king happened to pass by his grave. He saw a lot of people coming to the grave. On enquiring he found out that it was the grave of a Shia alim. He was enraged and ordered the destruction of the grave. On his orders when the grave was opened, his body was found to be very fresh, with not the slightest hint of decay. A child was also found buried in the same grave. Even the body of the child had not decayed. The king was impressed and ordered the closure of the grave.
However Sayyed Ne’matullah Jazaeri had related another event. According to him, a great opponent of Shias established his rule in Baghdad He wanted to stop the people from visiting the graves of the Masoomeen(a), and decided to destroy them. He decided to begin with the grave of The 7th Imam, it being closest to Baghdad. Preparations got underway, when someone informed him that the Shias believe that the bodies of their Imams do not decay in the graves. The king replied,” let the grave be opened. If what they say turns out to be true, I will close the grave with great honor. If I find the body decayed, I will consider my actions justified”. But someone else told him,” you do not need to go far to check their claim, because they claim the same thing for their Ulema as well. One of their Ulema is buried in Baghdad itself. Open that grave. If the body is still fresh, it can be concluded that their faith is the correct one. Thus Kulaini’s grave was opened, the body was found to be so fresh that he appeared to be asleep. Even the color of henna on his nails had not faded. The king was impressed. He ordered the grave to be closed and a dome erected over it