The Rare Ahadith in the context

“I was in the presence of The Imam (a.s.) and he sneezed. I then asked him, “May Allah take my soul in service for your cause, what should one say when the Imam sneezes?” The Imam (a.s.) said, “One should say, ‘May Allah (grant) blessings (up on) you.’”

a man asked, “Is al-Qa’im (the one who will rise with Divine Authority) is offered the Islamic greeting as the commander of the faithful?” The Imam (a.s.) said, “No, because that is the name that Allah had given to Ali ibn abu Talib (a.s.). Allah had not given this name to anyone before him. No one will be called with this name except an unbeliever.” I then said, “May Allah take my soul in service for your cause, what form of Islamic greeting would be offered to him?” The Imam (a.s.) said, “They will say, “Peace be up on you, O Baqiyya Allah (Allah’s reserved power to establish His authority on earth). He then recited, “If you are true believers then know that the profit which God has left for you is better for you (than what you may gain through deceitful ways). I am not responsible for your deeds.” (11:86)

“I asked abu al-Hassan (a.s.), ‘Why is he (Ali ibn abu Talib (a.s.) called Amir al-Mu’minin (commander of the faithful)?” He said, “Because he fed them knowledge. Have you not read in the Holy Quran, “We can buy more provisions with this for our family. .” (12:65)” In another hadith it is said, “Because Amir al-Mu’minin (a.s.) would feed them knowledge.”

“I asked abu Ja‘far (a.s.), ‘Why is he (Ali ibn abu Talib (a.s.) is called Amir al-Mu’minin (a.s.)?” He said, “Allah has given him this name and as such it has come in His book, “When your Lord asked all the offspring of Adam (before their birth), “Am I not your Lord?” All of them testified and bore witness to their testimony that on the Day of Judgment they would not say, “We were not aware of this (fact),.” (7:172) that Muhammad is My messenger and Ali is Amir al-Mu’minin (commander of the faithful).”