Sahih al-Bukhari Hadith 695 – Volume 8, Book 78

English

Volume 8, Book 78, Number 695:
Narrated Ibn 'Abbas:
While the Prophet was delivering a sermon, he saw a man standing, so he asked about that man.
They (the people) said, "It is Abu Israil who has vowed that he will stand and never sit down, and he
will never come in the shade, nor speak to anybody, and will fast.'' The Prophet said, "Order him to
speak and let him come in the shade, and make him sit down, but let him complete his fast."