Muwatta Imam Malik Book of Madina, Hadith 26

Yahya related to me that Malik said, "I heard that Umar ibn al- Khattab said, 'A night in Rukba (a valley near Taif,) is more preferable to me than ten nights in ash-Sham.' "
Malik said, "He meant to lengthen and preserve their lives because of the severity of the plague in ash-Sham ."

وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ قَالَ بَلَغَنِي أَنَّ عُمَرَ بْنَ الْخَطَّابِ، قَالَ لَبَيْتٌ بِرُكْبَةَ أَحَبُّ إِلَىَّ مِنْ عَشَرَةِ أَبْيَاتٍ بِالشَّامِ . قَالَ مَالِكٌ يُرِيدُ لِطُولِ الأَعْمَارِ وَالْبَقَاءِ وَلِشِدَّةِ الْوَبَإِ بِالشَّامِ .