It is narrated with the same chain that the Noble Prophet, peace and blessings be upon him, said: "You will surely follow the ways of the previous nations, span by span and cubit by cubit, to the extent that if they entered the hole of a lizard, you would also do the same." The companions, may Allah be pleased with them, asked: "O Messenger of Allah, do you mean the Jews and Christians by this?" He said: "Then who else?"
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 9819
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد حسن، خ: 7319