أَخْبَرَنَا عَمْرُو بْنُ زُرَارَةَ، أَخْبَرَنَا هُشَيْمٌ، أَخْبَرَنَا مُغِيرَةُ، عَنْ إِبْرَاهِيمَ، قَالَ: "كَانُوا إِذَا أَتَوْا الرَّجُلَ يَأْخُذُونَ عَنْهُ الْعِلْمَ، نَظَرُوا إِلَى صَلَاتِهِ، وَإِلَى سَمْتِهِ، وَإِلَى هَيْئَتِهِ، ثُمَّ يَأْخُذُونَ عَنْهُ" . .
Ibrahim al-Nakha'i, may Allah have mercy on him, said: When they (i.e., the righteous predecessors) would come to a man from whom they wanted to take knowledge, they would observe his prayer, conduct, and appearance, then they would take knowledge from him.