(a) This narration is also reported through another chain, and in it are the words 'anna amiran aw rajulan' (that a governor or a man).
(b) This hadith also has corroborating narrations (shawahid) through Abdullah bin Mas'ud (may Allah be pleased with him), which he narrates from the Prophet (peace and blessings be upon him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2973