Praise be to Allah,
Ziyaad ibn ar-Rabee’ Abu Khidaash al-Yuhmidee narrated, “I heard Abu ‘Imraan al-Jawnee say that he had heard Anas ibn Maalik say,
“I do not recognize anything that you do as compared to that which we used to do at the time of the Messenger of Allah (peace and blessings be on him). We asked him, “[How can you make such a generalization?]What about the prayer?” He replied, “Don’t you know that you have also changed the prayer?”
(Musnad Ahmad, Vol. 3, p. 101. The isnaad of this hadeeth is Saheeh according to the conditions set by al-Bukhaaree and Muslim.)
Commentary:
Anas ibn Maalik outlived the Prophet (peace and blessings be on him) and witnessed many changes in the way people offered their prayers and other acts of worship. By this, he meant that many people did not pray on time, as was the practice of the prophet (peace and blessings be on him).
Source:
Thulaathiyyaat Musnad Ahmad ibn Hanbal (may Allah have mercy on him)
Reports of Imaam Ahmad that have only three narrators between him and the Prophet, peace, and blessings be upon him.
Shaykh Muhammad ibn Ahmad ibn Saalim as–Saffaareenee al–Hanbalee ~(1114 –1188 AH)