It is narrated from Abu Tihya that he heard Sayyiduna Ali (may Allah be pleased with him) swear an oath, saying that Allah Almighty sent down from the heavens the name of Abu Bakr as "al-Siddiq". Imam al-Hakim says: Were it not for Muhammad bin Sulayman al-Sa'idi being unknown in its chain, I would have judged this chain to be authentic. However, it has a supporting narration (shahid) in the narration of al-Nazzal bin Sabrah from Sayyiduna Ali (may Allah be pleased with him).

It is narrated from al-Nazzal bin Sabrah that he said: We met Sayyiduna Ali (may Allah be pleased with him) while he was in a cheerful mood and joking. We said: Tell us about your companions. He said: All the Companions of the Messenger of Allah (peace and blessings be upon him) are my companions too. We said: Tell us about Abu Bakr (may Allah be pleased with him). He said: He is a man whom Allah named "al-Siddiq" on the tongue of Jibril (peace be upon him) and Muhammad (peace and blessings be upon him).

It is narrated from Sayyidah Aishah (may Allah be pleased with her) that she said: When the Prophet (peace and blessings be upon him) was taken by night to al-Masjid al-Aqsa (the event of the Mi'raj took place), in the morning the people began talking about it. Thereupon some of those who had believed in him and affirmed him (peace and blessings be upon him) apostatised, and they hurried to Sayyiduna Abu Bakr (may Allah be pleased with him) and said: Do you know anything about your companion? He claims that he was taken by night to Bayt al-Maqdis last night. He asked: "Did he really say that?" The people said: Yes. He said: "If he said that, then he has certainly spoken the truth." The people asked (in astonishment): Do you affirm that he went to Bayt al-Maqdis in one night and came back before morning? He said: "Yes, I affirm him in matters (of faith) far more remote than that: I affirm the news of the heavens, the revelation that comes to him morning and evening." For this reason Abu Bakr came to be named "al-Siddiq". This hadith has an authentic chain, but the two Shaykhs did not record it.