أَخْبَرَنَا الْهَيْثَمُ بْنُ جَمِيلٍ، عَنْ ابْنِ الْمُبَارَكِ، عَنْ يَحْيَى بْنِ بِشْرٍ، عَنْ عِكْرِمَةَ، قَالَ: "بِشَهْرٍ"، سُئِلَ عَبْد اللَّهِ: بِأَيِّهِمَا تَقُولُ ؟، قَالَ: "ثَلَاثَةُ أَشْهُرٍ أَوْثَقُ، وَشَهْرٌ يَكْفِي".
It is narrated from Yahya bin Bishr, Ikrimah (may Allah have mercy on him) said: (Its duration) is one month. Imam Darimi (may Allah have mercy on him) was asked: What is your opinion? He replied: Three months is a precautionary strong duration, and one month is also sufficient.