مَنْ لَمْ يَرْحَمْ صَغِيرَنَا وَيَعْرِفْ حَقَّ كَبِيرِنَا فَلَيْسَ مِنَّا
Transliteration
Man lam yarham saghirana wa ya'rif haqqa kabirina fa-laysa minna.
Translation
Whoever does not show mercy to our young and does not recognise the right of our elders is not one of us.
Narrated by Abdullah ibn Amr·Sunan Abi Dawud 4943, Jami' at-Tirmidhi 1919
