Sufyan bin Al-Husain narrated from Al-Hakam that Miqsam said:"Witr is seven and no less than five." I mentioned that to Ibrahim and he said: "From whom did he quote that?" I said: "I do not know." Al-Hakam said: "Then I performed Hajj and I met Miqsam and said to him: 'From whom (did you narrate that)?' He said: 'From the trustworthy one, from Aishah and from Maimunah.'"
أَخْبَرَنَا مُحَمَّدُ بْنُ إِسْمَاعِيلَ بْنِ إِبْرَاهِيمَ، عَنْ يَزِيدَ، قَالَ حَدَّثَنَا سُفْيَانُ بْنُ الْحُسَيْنِ، عَنِ الْحَكَمِ، عَنْ مِقْسَمٍ، قَالَ الْوَتْرُ سَبْعٌ فَلاَ أَقَلَّ مِنْ خَمْسٍ فَذَكَرْتُ ذَلِكَ لإِبْرَاهِيمَ فَقَالَ عَمَّنْ ذَكَرَهُ قُلْتُ لاَ أَدْرِي . قَالَ الْحَكَمُ فَحَجَجْتُ فَلَقِيتُ مِقْسَمًا فَقُلْتُ لَهُ عَمَّنْ قَالَ عَنِ الثِّقَةِ عَنْ عَائِشَةَ وَعَنْ مَيْمُونَةَ .
Nesai
The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day • Hadith 1716