مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3001
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn ‘Abbas (رضي الله عنه) that The Prophet (ﷺ) said: “Beware of narrating from me except what you are certain of." He said: "And whoever tells a lie about me deliberately, let him take his place in Hell, And whoever tells a lie about the Qur'an without knowledge, let him take his place in Hell."
Musnad Ahmad 3024Its isnad is da’eef because Abdul-A'la ath-Tha'labi is da'ee