The Prophet (ﷺ) said, "Al-Ka`ba'ir (the biggest sins) are: To join others (as partners) in worship with
Allah, to be undutiful to one's parents," or said, "to take a false oath." (The sub-narrator, Shu`ba is not
sure) Mu`adh said: Shu`ba said, "Al-Ka`ba'ir (the biggest sins) are: (1) Joining others as partners in
worship with Allah, (2) to take a false oath (3) and to be undutiful to one's parents," or said, "to
murder (someone unlawfully).
Sahih al-Bukhari Book 87, Hadith 9
Pray with us these two, meaning two days. When the sun passed the meridian, he gave command to Bilal who uttered the call to prayer. Then he commanded him and pronounced Iqama for noon prayer (Then at the time of the afternoon prayer) he again commanded and Iqama for the afternoon prayer was pronounced when the sun was high, white and clear. He then commanded and Iqama for the evening prayer was pronounced, when the sun had set. He then commanded him and the Iqama for the night prayer was pronounced when the twilight had disappeared. He then commanded him and the Iqama for the morning prayer was pronounced, when the dawn had appeared. When it was the next day, he commanded him to delay the noon prayer till the extreme heat had passed and he did so, and he allowed it to be delayed till the extreme heat had passed. He observed the afternoon prayer when the sun was high, delaying it beyond the time he had previously observed it. He observed the evening prayer before the twilight had vanished; he observed the night prayer when a third of the night had passed; and he observed the dawn prayer when there was clear daylight. He (the Holy Prophet) then said: Where is the man who inquired about the time of prayer? He (the inquirer) said: Messenger of Allah, here I am. He (the Holy Prophet) said: The time for your prayer is within the limits of what you have seen.
Sahih Muslim Book 5, Hadith 225
Yahya related to me from Malik from Ibn Shihab from Malik ibn Aus
ibn al-Hadathan an-Nasri that one time he asked to exchange 100
dinars. He said, "Talha ibn Ubaydullah called me over and we made a
mutual agreement that he would make an exchange for me. He took the
gold and turned it about in his hand, and then said, 'I can't do it
until my treasurer brings the money to me from al-Ghaba.' Umar ibn al-
Khattab was listening and Umar said, 'By Allah! Do not leave him until
you have taken it from him!' Then he said, 'The Messenger of Allah,
may Allah bless him and grant him peace, said, "Gold for silver is
usury except hand to hand. Wheat for wheat is usury except hand to
hand. Dates for dates is usury except hand to hand. Barley for barley
is usury except hand to hand." "'
Malik said, "When a man
buys dirhams with dinars and then finds a bad dirham among them and
wants to return it, the exchange of the dinars breaks down, and he
returns the silver and takes back his dinars. The explanation of what
is disapproved of in that is that the Messenger of Allah, may Allah
bless him and grant him peace, said, 'Gold for silver is usury except
hand to hand.' and Umar ibn al-Khattab said, 'If someone asks you to
wait to be paid until he has gone back to his house, do not leave
him.' When he returns a dirham to him from the exchange after he has
left him, it is like a debt or something deferred. For that reason, it
is disapproved of, and the exchange collapses. Umar ibn al-Khattab
wanted that all gold, silver and food should not be sold for goods to
be paid later. He did not want there to be any delay or deferment in
any such sale, whether it involved one commodity or different sorts of
commodities."
Muwatta Malik Book 31, Hadith 38
The Prophet said: "Whoever uses stones to clean himself, let him use an odd number of stones. Whoever does that has done well, and whoever does not, there is no harm in it. Whoever uses a tooth stick should spit out (whatever he removes) and whoever removes (the particle of food) by dislodging it with his tongue should swallow it. Whoever does that has done well, and whoever does not, tere is no harm in it. Whoever goes to the toilet should conceal himself, and if he cannot find anything except a pile of sand (behind which to conceal himself), then he should use that, for the Shaitan plays with the backside of the son of Adam. Whoever does that has done well, and whoever does not, there is no harm in it."
Sunan Ibn Majah Book 1, Hadith 71
regarding the Divine Verse: "O you who believe! You are forbidden to inherit women against their
will, and you should not treat them with harshness that you may take back part of the (Mahr) dower
you have given them." (4.19) (Before this revelation) if a man died, his relatives used to have the
right to inherit his wife, and one of them could marry her if he would, or they would give her in
marriage if they wished, or, if they wished, they would not give her in marriage at all, and they would
be more entitled to dispose her, than her own relatives. So the above Verse was revealed in this
connection.
Sahih al-Bukhari Book 65, Hadith 101