وَعَن عبد الله بن الزبير
قَالَ: كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُشِيرُ بِأُصْبُعِهِ إِذَا دَعَا وَلَا يُحَرِّكُهَا
Abdallah b. Az-Zubayr said that the Prophet (sallallahu alayhi wa sallam) used to point with his finger when he made supplication, but did not move it. Abu Dawud and Nasai transmitted it, Abu Dawud adding that he kept his look fixed on the finger he was pointing.
Mishkat al-Masabih 857, Book 5, Prayer, Hadith 335. 1 min read