It is narrated from Sayyiduna Mu'awiyah bin Haydah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever does not show mercy to people, Allah does not show mercy to him."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Bahz bin Hakim (may Allah have mercy on him) except Zakariyya bin Abi Ubaydah. Ahmad bin Abd al-Mu'min is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب العين / 4168
Hadith Gradingمحدثین:إسناده ضعيف، فيه زكريا بن أبي عبيدة وفيه ضعف
Hadith Takhrij«قال الهيثمي: وفيه زكريا بن أبي عبيدة وفيه ضعف «مجمع الزوائد ومنبع الفوائد، ج 8، ص 187»»