مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1847
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn ‘Abbas said: The Messenger of Allah (ﷺ) delivered a speech and said: "If the muhrim cannot find an izar (waist wrapper), let him wear pants, and if he cannot find sandals, let him wear khufflin (leather slippers).”
Musnad Ahmad 1848Sahih (Darussalam) [, al-Bukhari (1841) and Muslim (1178)]