Abu Dawud Book 27, Hadith Number 4078.
Narated By Sahl Ibn al-Hanzaliyyah : Qays ibn Bishr at-Taghlibi said: My father told me that he was a companion of Abu al-Darda’. There was in Damascus a man from the companions of the Prophet (PBUH), called Ibn al-Hanzaliyyah. He was a recluse and rarely met the people. He remained engaged in prayer. When he was not praying he was occupied in glorifying Allah and exalting Him until he went to his family. Once he passed us when we were with Abu al-Darda’.
Abu al-Darda’ said to him: Tell us a word which benefits us and does not harm you.
He said: The Apostle of Allah (PBUH) sent out a contingent and it came back. One of the men came and sat in the place where the Apostle of Allah (PBUH) used to sit, and he said to a man beside him: Would that you saw us when we met the enemy and so-and-so attacked and cut through a lance.
He said: Take it from me and I am a boy of the tribe Ghifar. What do you think about his statement?
He replied: I think his reward was lost. Another man heard it and said: I do not think that there is any harm in it. They quarrelled until the Apostle of Allah (PBUH) heard it, and he said: Glory be to Allah! There is no harm if he is rewarded and praised. I saw that Abu al-Darda’ was pleased with it and began to raise his hand to him and say: Did you hear it from the Apostle of Allah (PBUH)?
He said: Yes. He continued to repeat it to him so often that I thought he was going to kneel down. He said: On another day he again passed us.
Abu al-Darda’ said to him: (Tell us) a word which benefits us and does not harm you.
He said: The Apostle of Allah (PBUH) said to us: One who spends on (the maintenance of) horses (for jihad) is like the one who spreads his hand to give alms (sadaqah) and does not withhold it. He then passed us on another day.
Abu al-Darda’ said to him: (Tell us) a word which benefits us and does no harm to you.
He said: The Apostle of Allah (PBUH) said: Khuraym al-Asadi would be a fine man were it not for the length of his hair, which reaches the shoulders, and the way he lets his lower garment hang down. When Khuraym heard that, he hurriedly, took a knife, cut his hair in line with his ears and raised his lower garment half way up his legs. He then passed us on another day.
Abu al-Darda’ said to him: (tell us) a word which benefits us and does not harm you.
He said: I heard the Apostle of Allah (PBUH) say: You are coming to your brethren; so tidy your mounts and tidy your dress, until you are like a mole among the people. Allah does not like obscene words or deeds, or do intentional committing of obscenity.