أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ الْمُبَارَكِ الْمُخَرِّمِيُّ، قَالَ حَدَّثَنَا أَبُو مُعَاوِيَةَ، قَالَ حَدَّثَنَا الأَعْمَشُ، عَنْ أَبِي صَالِحٍ، عَنْ سَعْدٍ، قَالَ مَرَّ عَلَىَّ رَسُولُ اللَّهِ صلى الله عليه وسلم وَأَنَا أَدْعُو بِأَصَابِعِي فَقَالَ " أَحِّدْ أَحِّدْ " . وَأَشَارَ بِالسَّبَّابَةِ .
It was narrated from Sa`d who said: "The Messenger of Allah (PBUH) passed by me when I was supplicating with my fingers and he said: 'Make it one, make it one' and pointed with his forefinger." Translation Not Available
Book Ref: Sunan An Nisai Book 13 Hadith 1273
Web Ref: Sunan An Nisai Vol 2 Book 13 Hadith 1274