It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said:
And al-A'mash (may Allah have mercy on him) narrates from Zayd bin Wahb (may Allah have mercy on him), from Sayyiduna Abdullah (may Allah be pleased with him), that the Messenger of Allah (peace and blessings be upon him) said: "Soon after me there will be (objectionable) matters and favouritism (others being preferred over those who deserve)." The Companions said: O Messenger of Allah! What do you command whoever lives to see that? He (peace and blessings be upon him) said: "Fulfil the right that is due from you (as subjects), and ask Allah for what is due to you."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from al-A'mash, from Abu Hazim, except Yahya bin Isa, and Ahmad bin Abd al-Aziz is alone in narrating it; whereas the hadith of Zayd bin Wahb is (well known) with Imam al-Thawri (may Allah have mercy on him) and the other hadith scholars."
Hadith Referenceالمعجم الأوسط / باب الميم / 6893
Hadith Takhrij«أخرجه البخاري فى «صحيحه» برقم: 3603، 7052، ومسلم فى «صحيحه» برقم: 1843، وابن حبان فى «صحيحه» برقم: 4587، والترمذي فى «جامعه» برقم: 2190، والبيهقي فى «السنن الكبرى» برقم: 16712، وأحمد فى «مسنده» برقم: 3714، 3715، 3737، 4147، 4148، 4209، 4210، والطيالسي فى «مسنده» برقم: 295، وأبو يعلى فى «مسنده» برقم: 5156، والبزار فى «مسنده» برقم: 1767، وابن أبي شيبة فى «مصنفه» برقم: 38420، والطبراني فى «الكبير» برقم: 10073، والطبراني فى «الصغير» برقم: 985»