Salam alaikum.

I was browsing site of grand ayatolla al-Shirazi.  Translator of his answers, added some info from himself in the text. He said:

Translator’s note:

Some of the Sunni sources, which report this event, are as follows:

1. Ibn Hajar al-‘Asqalani, Lisaan al-Meezaan, vol. 1, p 268
2. Muhib-id-Deen al-Tabari, Thakha‘er al-‘Uqba, vol. 6, p17
3. Al-Shahrestaani, al-Melal wa al-Nahal, vol. 1, p 57
4. Al-Mas’udi, Ithbaat al-Waseyyah, p 142

Praise to Allah! Masudi wasn’t sunni. But he was shia, as we have mentioned before.

History of al-Ya`qûbî and Muruj az-zahab of Masoode, Both of them were shias