The Messenger of Allah (saws) forbade trailing garments during prayer and that a man should cover his mouth.

Abu Dawud said: This tradition has also been narrated by 'Isi on the authority of 'Ata' from Abu Hurairah: The Prophet (saws) forbade trailing garments during prayer.

Wa'il said: Tariq ibn Suwayd or Suwayd ibn Tariq asked the Prophet (saws) about wine, but he forbade it. He again asked him, but he forbade him. He said to him: Prophet of Allah, it is a medicine. The Prophet (saws) said: No it is a disease.

When the delegate of `Abd Al-Qais came to Allah's Apostle, he said, "Who are the delegate?" They said, "The delegate are from the tribe of Rabi`a." The Prophet said, "Welcome, O the delegate, and welcome! O people! Neither you will have any disgrace nor will you regret." They said, "O Allah's Apostle! Between you and us there are the infidels of the tribe of Mudar, so please order us to do something good (religious deeds) that by acting on them we may enter Paradise, and that we may inform (our people) whom we have left behind, about it." They also asked (the Prophet) about drinks. He forbade them from four things and ordered them to do four things. He ordered them to believe in Allah, and asked them, "Do you know what is meant by belief in Allah?" They said, "Allah and His Apostle know best." He said, ''To testify that none has the right to be worshipped except Allah, the One, Who has no partners with Him, and that Muhammad is Allah's Apostle; and to offer prayers perfectly and to pay Zakat." (the narrator thinks that fasting in Ramadan is included), "and to give one-fifth of the war booty (to the state)." Then he forbade four (drinking utensils): Ad-Duba', Al56 Hantam, Al-Mazaffat and An-Naqir, or probably, Al-Muqaiyar. And then the Prophet said, "Remember all these things by heart and preach it to those whom you have left behind."

Rafi` bin Khadij said, "My two uncles told me that they (i.e. the companions of the Prophet) used to rent the land in the lifetime of the Prophet for the yield on the banks of water streams (rivers) or for a portion of the yield stipulated by the owner of the land. The Prophet forbade it." I said to Rafi`, "What about renting the land for Dinars and Dirhams?" He replied, "There is no harm in renting for Dinars- Dirhams. Al-Laith said, "If those who have discernment for distinguishing what is legal from what is illegal looked into what has been forbidden concerning this matter they would not permit it, for it is surrounded with dangers."

Nafi narrated to me that 'Abdullah said that Allah's Apostle forbade the Shighar. I asked Nafi', "What is the Shighar?" He said, "It is to marry the daughter of a man and marry one's daughter to that man (at the same time) without Mahr (in both cases); or to marry the sister of a man and marry one's own sister to that man without Mahr." Some people said, "If one, by a trick, marries on the basis of Shighar, the marriage is valid but its condition is illegal." The same scholar said regarding Al-Mut'a, "The marriage is invalid and its condition is illegal." Some others said, "The Mut'a and the Shighar are permissible but the condition is illegal."

A man asked the Prophet (saws) whether one who was fasting could embrace (his wife) and he gave him permission; but when another man came to him, and asked him, he forbade him. The one to whom he gave permission was an old man and the one whom he forbade was a youth.

Sa'id ibn AbulHasan said: When AbuBakrah came to us to give some evidence, a man got up from his place, but he refused to sit in it saying: The Prophet (saws) forbade this, and the Prophet (saws) forbade anyone to wipe his hand on the garment of anyone whose clothing he had not himself provided.