سنن النسائي

It was narrated from Abdullah bin Az-Zubair: That the Prophet (ﷺ) used to point with his finger when he supplicated, but he did not move it. Ibn Jurayj said: "And 'Amr added: 'Amir bin 'Abdullah bin Az-Zubair told me that his father saw the Prophet (ﷺ) supplicating like that, putting his weight on his left arm, leaning on his left leg.'"