[Machine] "Umrah used to say that a vow taken in a forbidden matter must be expiated. Hisham wrote to me that Yahya reported on the authority of Yala ibn Hakim, on the authority of Sa'id ibn Jubayr, that Ibn Abbas used to say that a vow taken in a forbidden matter must be expiated. Then Ibn Abbas cited this verse: 'Indeed in the Messenger of Allah you have a good example to follow' [33:21]."  

أَنَّ عُمَرَ كَانَ يَقُولُ فِي الْحَرَامِ يَمِينٌ يُكَفِّرُهَا قَالَ هِشَامٌ وَكَتَبَ إِلَيَّ يَحْيَى يُحَدِّثُ عَنْ يَعْلَى بْنِ حَكِيمٍ عَنْ سَعِيدِ بْنِ جُبَيْرٍ أَنَّ ابْنَ عَبَّاسٍ كَانَ يَقُولُ فِي الْحَرَامِ يَمِينٌ يُكَفِّرُهَا فَقَالَ ابْنُ عَبَّاسٍ {لَقَدْ كَانَ لَكُمْ فِي رَسُولِ اللهِ أُسْوَةٌ حَسَنَةٌ} [الأحزاب 21]