Abu Hurairah (RA) reported Allah's Messenger ( صلی اللہ علیہ وسلم ) as saying: An oath is to be interpreted according to the intention of the one who takes it.

Abu Hurairah (RA) reported that (Hadrat) Sulaiman had sixty wives. He (one day) said: I will visit each one of them every night, and every one of them will become pregnant and give birth to a male child who will be a horseman and fight in the cause of Allah. But (it so happened) that none of them became pregnant except one, but she gave birth to an incomplete child. Thereupon Allah's Messenger ( صلی اللہ علیہ وسلم ) said: Had he said Insha' Allah (if God so wills), then every one of them would have given birth to a child who would have been a horseman and fought in the cause of Allah

Abu Hurairah (RA) reported Allah's Prophet ( صلی اللہ علیہ وسلم ) as saying that Sulaiman bin Dawud, the Apostle of Allah ( صلی اللہ علیہ وسلم ) , observed: I will have an intercourse with seventy wives during the night; all of them will give birth to a male child who will fight in the cause of Allah. His companion or the angles said to him: Say, "If God wills." But he (Hadrat Sulaimin) did not say so, and he forgot it. And none of his wives gave birth to a child, but one who gave birth to a premature child. Allah's Messenger ( صلی اللہ علیہ وسلم ) said: Had he said Insha' Allah (if God so will) he would not have failed and his desire would have been materialised.

Abu Hurairah (RA) reported this hadith from the Apostle of Allah ( صلی اللہ علیہ وسلم ) through another chain of transmitters.

Abu Hurairah (RA) reported that Sulaiman bin Dawud said: I will certainly have intercourse with seventy wives during the night, and every wife amongst them will give birth to a child, who will fight in the cause of Allah. It was said to him: Say: "Insha' Allah" (God willing), but he did not say so and forgot it. He went round them but none of them give birth to a child except one woman and that too was an incomplete person. Upon this Allah's Messenger ( صلی اللہ علیہ وسلم ) said: If he had said "Insha' Allah" he would not have failed, and his desire must have been fulfilled.

Abu Hurairah (RA) reported Allah's Apostle ( صلی اللہ علیہ وسلم ) as saying that Sulaiman bin Dawud (once) said: I will go round in the night to my ninety wives, and every one of them will give birth to a child (who will grow up) as a horseman and fight in the cause of Allah His companions said to him: Say "Insha' Allah." but he did not say Insha' Allah. He went round all of them but none of them became pregnant but one, and she gave birth to a premature child. And by Him in Whose hand is the life of Muhammad, if he had said Insha' Allah (his wives would have given birth to the children who would all have grown up into horsemen and fought in the way of Allah).

This hadith has been narrated on the authority of Abu Zinad with the same chain of transmitters with a variation of (these words): "Every one of them giving birth to a child, who would have fought in the cause of Allah."

Hammam bin Munabbih reported: This is what Abu Hurairah (RA) reported to us from Allah's Messenger ( صلی اللہ علیہ وسلم ) , and he narrated a hadith and (one) of them is that Allah's Messenger ( صلی اللہ علیہ وسلم ) said: I swear by Allah, it is more sinful in Allah's sight for one of you to persist in an oath regarding his family than payment of its expiation which Allah has imposed upon him (for breaking the oath).

Book 015, Number 4072: Ibn 'Umar reported that Umar (b. Khattab) said: Messenger of Allah, I had taken a vow during the days of Ignorance (Jahiliyya) that I would observe I'tikaf for a night in the Sacred Mosque. He (the Holy Prophet) said: Fulfil your vow.

This hadith is transmitted on the authority of Ibn 'Umar (RA) with a slight variation of words.