The Book of Zakat (Kitab Al-Zakat)
Muslim :: Book 5 : Hadith 2200
This hadith has been narrated on the authority of Zaid with the same chain of transmitters except with (a slight) change of words (i. e. he [the Holy Prophet]) said: Or he enjoined what is good,... and said: He enters the evening [ie. he walks till eveningl.