“O you who believe! Whoever of you turns back on his religion, Allah will soon bring a people whom He loves and who love Him, humble towards the believers, mighty against the infidels”
Imam Sadiq (as) said, “Allah will keep the companions of the Qaem (as) safe for him even if all of the people abandon him. (The companions) are those to whom Allah refers in this verse, “So if these people disbelieve in it, indeed We have (already) entrusted it to a people who are not disbelievers in it” (Chapter 6, verse 89). They are (also) those (who are) described in this verse, “O you who believe! Whoever of you turns back on his religion, Allah will soon bring a people whom He loves and who love Him, humble towards the believers, mighty against the infidels”
Sulaymaan bin Harun said, I said to Imam Sadiq (as), “Some people believe that the sword of the Messenger of Allah is with Abdullah, son of Hasan (as)!”
Imam (as) replied, “I swear to Allah that he has not seen the sword of the Messenger of Allah (sawa) even with one of his eyes, neither did his father, unless he saw it with (his uncle) Husain bin Ali (as).
(It) is kept safe for the Qa’em (as). Therefore, do not be swayed to the right or left. I swear to Allah that this is a clear matter and I swear to Allah that even if the people of the heavens and earth unite in moving this position from where Allah has placed it, they will fail. I swear to Allah that even if all of the people become disbelievers, Allah will bring a group of people who believe in it (to establish this matter).
Have you not heard the words of Allah, “O you who believe! Whoever of you turns back on his religion, Allah will soon bring a people whom He loves and who love Him, humble towards the believers, mighty against the infidels”? In another verse, Allah says, “So if these people disbelieve in it, indeed We have (already) entrusted it to a people who are not disbelievers in it” (Chapter 6, verse 89). Both of these verses refer to the same group.” (Tafseer Ayyashi volume 1 page 325)