It is narrated on the authority of 'Abdullah b. Mas'ud that the Messenger of Allah (may peace and blessings be upon him) observed:
| Reference | : Sahih Muslim 64a |
| In-book reference | : Book 1, Hadith 127 |
| USC-MSA web (English) reference | : Book 1, Hadith 122 |
| (deprecated numbering scheme) |