It is narrated from Sayyiduna Abu Hurayrah and Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that they said: "The Messenger of Allah (peace and blessings be upon him) addressed us in a sermon, and in it he also mentioned: 'Whoever retracts a testimony or conceals it, Allah Almighty will make him eat his own flesh on the Day of Resurrection before the heads of all creation, then He will admit him into Hell while he is chewing his own tongue. And whoever gives false testimony against a Muslim or a disbeliever will be hung by his tongue on the Day of Resurrection, then he will be placed with the hypocrites in the lowest level (al-dark al-asfal) of Hell. And whoever fabricates dreams that he did not see will be like the one who gave false testimony.'"
This hadith is mawdu' (fabricated).
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب القضاء والشهادات / 2203
Hadith Gradingمحدثین:إسناده موضوع
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :الحديث موضوع. » «أخرجه المطالب العالية لابن حجر برقم: 245»