مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2323
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn ‘Abbas that the Prophet (ﷺ) said: “There are five, all of which are evil; the pilgrim in ihram may kill them and they may be killed in the Haram..." A similar report.
Musnad Ahmad 2331lts isnad is saheeh]