When Khaybar was conquered, a sheep was presented to the Prophet ﷺ as a gift, and it had been laced with poison.The Prophet ﷺ said, "Gather for me all the Jews who are here."They were gathered before him, and he said, "I am going to ask you about something. Will you be truthful with me about it?"They said, "Yes."The Prophet ﷺ asked them, "Who is your father?"They said, "So-and-so."He said, "You have lied. Rather, your father is so-and-so."They said, "You have spoken the truth."He said, "Will you be truthful with me about something if I ask you about it?"They said, "Yes, Abu Qasim, and if we lie, you will know our lie just as you knew it about our father."He said to them, "Who are the people of the Fire?"They said, "We will be in it for a short while, then you will succeed us in it."The Prophet ﷺ said, "Be despised in it. By Allah, we will never succeed you in it."Then he said, "Will you be truthful with me about something if I ask you about it?"They said, "Yes, Abu Qasim."He said, "Have you put poison in this sheep?"They said, "Yes."He said, "What led you to do that?"They said, "We wanted, if you were a liar, to be relieved of you, and if you were a prophet, it would not harm you."
لما فتحت خيبر أهديت للنبي ﷺ شاة فيها سم، فقال النبي ﷺ: اجمعوا إلي من كان ها هنا من يهود. جمعوا له فقال: إني سائلكم عن شيء فهل أنتم صادقي عنه؟ فقالوا: نعم. قال لهم النبي ﷺ: من أبوكم؟ قالوا: فلان، فقال: كذبتم بل أبوكم فلان قالوا: صدقت. قال: فهل أنتم صادقي عن شيء إن سألت عنه؟ فقالوا: نعم يا أبا القاسم، وإن كذبنا عرفت كذبناكما عرفته في أبينا فقال لهم: من أهل النار؟ قالوا: تكون فيها يسيراثم تخلفونا فيها. فقال النبي ﷺ: الخسئوا فيها، والله لا تخلقكم فيهاأبدا ثم قال: هل أنتم صادقي عن شيء إن سألتكم عنه؟ فقالوا: نعم يا أبا القاسم. قال: هل جعلتم في هذه الشاة سما قالوا: نعم، قال: ما حملكم على ذلك؟ قالوا: أردنا إن كنت كاذبا نستريح، وإن كنت نبيا لم يضرك.