It is narrated from Salim bin Abdullah that Abdullah bin Umar (may Allah be pleased with them both) rode towards Raym (the name of a place near Madinah), and he performed shortened prayers on this route. Imam Malik (may Allah have mercy on him) says: This too is located four burud from Madinah.
Hadith Referenceمسند الإمام الشافعي / كتاب الصلاة / 349
Hadith Takhrijأخرجه مالك في الموطأ: الصلاة، باب ما يجب فيه قصر الصلاة - والبيهقي: 3/ 136 وفي معرفة السنن والآثار له (1583) - وعبد الرزاق: 4301.