Sayyid Abu al-Qasim al-Khoei

Ayatullah al-Uzma Sayyid Abul-Qasim al-Khui was born in Rajab 15, 1317 A.H. (November 19, 1899) at Khu’i in Iranian Azerbaijan. Around the age of 13, he moved to Iraq and took up residence in Najaf where he began studying Shia theology with the scholars of that city. He attained the rank of Ayatollah and was subsequently recognized as a Marja. He continued to live in Najaf, becoming a teacher for the remainder of his life, and oversaw the studies of scholars who would be qualified to issue fatwas based on Shia theology. Due to his prominent position as a teacher and scholar in Najaf, he became an important leader of worldwide Shias. He became the most prominent Grand Ayatollah in 1971 after the death of Grand Ayatollah Muhsin al-Hakim.

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This possibility exists for almost any book that has come to us from the time before mass printing. In the days when manuscripts were hand copied, there was a lot of room for error, although there were various safeguards that classical Islamic scholars used to try to reduce the possibility of intentional or unintentional error. 

Regarding Kitab Sulaym, it is possible that some of it is correctly ascribed to the transmitter who called himself Sulaym ibn Qays and some comes from other people. (This is also true for any other work.) However, in any case, the content of Kitab Sulaym seems to be mostly traceable to an early era of Islam so it most likely reflects what was going on in that time regardless of exactly where every bit came from. 

However, proving tampering also requires some proof or at least proof of motivation, and I don't think we have any evidence to suggest that specifically Aban ibn Abi Ayyash tampered with it. If there are interpolations, they probably came in later copies. 

The only real exception to this rule is the Qur'an, because it was transmitted and memorized by so many people, that it would have been very hard to add things to it without causing mass objections.

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Zaid Alsalami, Shaykh Dr Zaid Alsalami is an Iraqi born scholar, raised in Australia. He obtained a BA from Al-Mustafa University, Qom, and an MA from the Islamic College in London. He also obtained a PhD from... Answered 2 years ago

Bismihi ta'ala

The grand scholar, Ayatullah al-Udhma Seyid Abu al-Qasim al-Khu`i (1317/1899 - 1412/1992 AH/CE) was one of the outstanding Shi'ah jurists between the sixties until the early nineties.

For a detailed biography on his life, please refer to:

https://www.al-khoei.org/grand-ayatollah-al-khoei/

As far as his teachers are concerned, he studied under the greatest of scholars of hist time. Among them were:

1. Sheikh Fathullah Esfahani, known as Sheikh al-Shari'ah.

2. Sheikh Mehdi al-Mazandarani.

3. Sheikh Dhiya' al-Din al-'Iraqi.

4. Sheikh Muhammad Husain al-Gharawi al-Kumpani. 

5. Sheikh Muhammad Husain al-Na'ini. 

And others. However, from what I have looked into, I have not come accross information stating that the late Seyid al-Khu`i studied under the late Seyid Abu al-Hasan al-Esfahani (1284/1867 - 1365/1946 AH/CE). 

As for some of the prominent students of Seyid Abu al-Hasan al-Esfahani, who are famously known, they are:

1. Seyid Mahmud al-Shahrudi.

2. Seyid Muhsin al-Hakim

3. Seyid Hadi al-Milani.

4. Mirza Hashim al-Amuli.

5. Allamah Tabatabai.

And others. 

And Allah knows best.