Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) says: We used to count 'al-yamin al-ghamus' among the sins for which there is no expiation (that is, it is not forgiven without repentance). It was asked: What is 'al-yamin al-ghamus'? He said: That a man seizes the wealth of another by means of his (false) oath. This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it; however, this statement of the Companion has been accepted with this chain.

It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever, standing at this pulpit of mine, swears a sinful (false) oath, let him take his seat in Hell - or he said: Hell becomes obligatory for him - even if it is over a green miswak of the pilu tree." This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Jabir bin Abdullah al-Salami (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever swears a sinful oath at this pulpit of mine, let him take his seat in the Fire."

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "No male slave or female slave swears a sinful oath at this pulpit, even over a single fresh miswak, except that Hell becomes obligatory for them." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), because its narrator al-Hasan bin Yazid (Abu Yunus) is strong and a devout worshipper, but the two Shaykhs did not record it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Allah Almighty has permitted me to tell you about a (gigantic) rooster whose feet are on the earth and whose neck is bent beneath the Throne. It says (in glorification): 'Subhanaka, ma a'zama rabbana!' (O Allah, You are free of all imperfection; how great is our Lord!) Then Allah Almighty replies: The one who swears falsely by Me does not know this (My greatness)." This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.

Sa'd bin Ubaydah narrates that Sayyiduna Ibn Umar (may Allah be pleased with them both) heard a man swearing by the Ka'bah, so he said: Do not swear by the Ka'bah, for I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever swears by other than Allah has committed disbelief - or (he said) has committed shirk." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.

It is narrated from Sayyidah Qutaylah bint Sayfi (may Allah be pleased with her), a woman of the tribe of Juhaynah, that a Jewish scholar (habr) came to the Prophet (peace and blessings be upon him) and said: You people also commit shirk. You say: 'Ma sha'a Allahu wa shi'ta' (What Allah wills and what you (peace and blessings be upon him) will), and you swear 'by the Ka'bah'. So the Messenger of Allah (peace and blessings be upon him) said (to the Companions): 'Ma sha'a Allahu thumma shi'ta' "Say it this way: What Allah wills, then what you will; and if you must swear, say: By the Lord of the Ka'bah." This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Buraydah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "He is not one of us who swears by 'the trust' (al-amanah), and he too is not one of us who incites a man's wife or his slave (against her husband or his master)." This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever swears an oath (of this kind) about something, he is as he said: if he said he is a Jew (if such-and-such happens), then he is a Jew; if he said he is a Christian, then he is a Christian; and if he said he is free of Islam, then he is indeed free of Islam. And whoever makes the call of the Jahiliyyah (invokes tribal partisanship) is one of the heaps of Hell." The Companions said: O Messenger of Allah, even if he fasts and prays? He (peace and blessings be upon him) said: "Even if he fasts and prays." This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Buraydah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever says, 'I am free of Islam', then if he is lying, he is as he said; and if he is truthful (in his claim), he will never return to Islam safe and sound." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.