Swear not; known obedience is better. Lo! Allah is aware of what ye do.
Surah 24: 22
And let not those who possess dignity and ease among you swear not to give to the near of kin and to the needy, and to fugitive for the cause of Allah.
Surah 24: 4
And those who accuse honourable women but bring not four witnesses, scourge them with eighty stripes and never afterward accept their testimony. They indeed are evil-doers.
Surah 24: 6-8
As for those who accuse their wives but have no witnesses except themselves; let the testimony of one of them be four testimonies, swearing by Allah that he is of thosen who speak the truth.
And yet a fifth, invoking the curse of Allah on him if he is of those who lie.
And it shall avert the punishment from her if she bear witness before Allah four times that the things he saith is indeed false.
Surah 24: 11
Lo! they who spread the slander are a gang among you. Unto every man of them will be paid that which he hath earned of the sin.
Surah 24: 13
Why did they not produce four witnesses? Since they produce not witnesses, they verily are liars in the sight of Allah.
Surah 24: 15
When ye welcomed it with your tongues, and uttered with your mouths that whereof ye had no knowledge, ye counted it a trifle. In the sight of Allah it is very great.
Surah 24: 64
Lo! verily unto Allah belongeth whatsoever is in the heaven and the earth. He knoweth your condition. And He knoweth the Day when they are returned unto Him so that He may inform them of what they did. Allah is Knower of all things.