Muwatta Malik #1731
Madina
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَحَدَّثَنِي مَالِكٌ، أَنَّهُ بَلَغَهُ أَنَّ عُمَرَ بْنَ عَبْدِ الْعَزِيزِ، حِينَ خَرَجَ مِنَ الْمَدِينَةِ الْتَفَتَ إِلَيْهَا فَبَكَى ثُمَّ قَالَ يَا مُزَاحِمُ أَتَخْشَى أَنْ نَكُونَ مِمَّنْ نَفَتِ الْمَدِينَةُ
Malik related to me that he had heard that when Umar ibn Abd al-
Aziz left Madina, he turned towards it and wept. Then he said, "O
Muzahim! Do you fear that we might be among those that Madina casts
off?"
About Muwatta Malik
This hadith is #1731 from Muwatta Malik, in the Book of Madina.