Ibn Umar RA said: The Messenger of Allah (sallallaahu ’alayhi wa sallam) said, “A person should not enter into a transaction when his (Muslim) brother has already negotiated, nor should he make a proposal of marriage when that of his brother is pending, except with the permission of...

Reported Amr bin Shuaib, on the authority of his father and grandfather that the Prophet (sallallaahu ’alayhi wa sallam) said, “Do not pluck out grey hair, for they are the Muslim’s light on the Day of Resurrection.”
(Abu Dawud, Tirmidhi and An-Nasa’i)

Abu Marthad Kannaz bin Husain RA said: I heard the Messenger of Allah (sallallaahu ’alayhi wa sallam) saying: “Do not offer Salat (prayer) facing the graves and do not sit on them.”
(Muslim)

Abdullah bin Amr bin Al-As RA said: The Messenger of Allah (sallallaahu ’alayhi wa sallam) said, “Whosoever possesses these four characteristics is a sheer hypocrite; and anyone who possesses one of them possesses a characteristic of hypocrisy till he gives it up. These are: when he...