It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "He who does not show mercy to our young ones and does not honor and respect our elders is not from us."
Hadith Referenceالادب المفرد / كتاب الأكابر / 356
Hadith Gradingالألبانی:حسن صحيح
Hadith Takhrij«حسن صحيح : أخرجه ابن أبى الدنيا فى العيال : 187 و الطبراني فى الكبير : 227/8 - انظر الصحيحة : 2196»