Volume 8, Book 73, Number 8:
Narrated Anas bin Malik:
Allah’s Apostle mentioned the greatest sins or he was asked about the greatest sins. He said, “To
join partners in worship with Allah; to kill a soul which Allah has forbidden to kill; and to be undu –
tiful or unkind to one’s parents.” The Prophet added, “Shall I inform you of the biggest of the great
sins? That is the forged statement or the false witness.” Shu’ba (the sub-narrator) states that most
probably the Prophet said, “the false witness.”